Reformat some file names in tor.1.txt

Reformat file name headings in the FILES section of tor.1.txt to
display as fixed-width in the HTML version.

Based on a patch by Swati Thacker.  Part of #32176.

doc/tor.1.txt

@@ -3391,45 +3391,44 @@ Tor catches the following signals:
 FILES
 -----
 
-**@CONFDIR@/torrc**::
+**`@CONFDIR@/torrc`**::
     Default location of the configuration file.
 
-**$HOME/.torrc**::
+**`$HOME/.torrc`**::
     Fallback location for torrc, if @CONFDIR@/torrc is not found.
 
-**@LOCALSTATEDIR@/lib/tor/**::
+**`@LOCALSTATEDIR@/lib/tor/`**::
     The tor process stores keys and other data here.
 
-
-__CacheDirectory__**/cached-certs**::
+__CacheDirectory__/**`cached-certs`**::
     Contains downloaded directory key certificates that are used to verify
     authenticity of documents generated by the Tor directory authorities.
 
-__CacheDirectory__**/cached-consensus** and/or **cached-microdesc-consensus**::
+__CacheDirectory__/**`cached-consensus`** and/or **`cached-microdesc-consensus`**::
     The most recent consensus network status document we've downloaded.
 
-__CacheDirectory__**/cached-descriptors** and **cached-descriptors.new**::
+__CacheDirectory__/**`cached-descriptors`** and **`cached-descriptors.new`**::
     These files contain the downloaded router statuses. Some routers may appear
     more than once; if so, the most recently published descriptor is
     used. Lines beginning with **`@`**-signs are annotations that contain more
     information about a given router. The **`.new`** file is an append-only
     journal; when it gets too large, all entries are merged into a new
     cached-descriptors file.
 
-__CacheDirectory__**/cached-extrainfo** and **cached-extrainfo.new**::
+__CacheDirectory__/**`cached-extrainfo`** and **`cached-extrainfo.new`**::
     Similar to **cached-descriptors**, but holds optionally-downloaded
     "extra-info" documents. Relays use these documents to send inessential
     information about statistics, bandwidth history, and network health to the
     authorities. They aren't fetched by default. See the DownloadExtraInfo
     option for more information.
 
-__CacheDirectory__**/cached-microdescs** and **cached-microdescs.new**::
+__CacheDirectory__/**`cached-microdescs`** and **`cached-microdescs.new`**::
     These files hold downloaded microdescriptors.  Lines beginning with
     **`@`**-signs are annotations that contain more information about a given
     router. The **`.new`** file is an append-only journal; when it gets too
     large, all entries are merged into a new cached-microdescs file.
 
-__DataDirectory__**/state**::
+__DataDirectory__/**`state`**::
     Contains a set of persistent key-value mappings. These include:
         - the current entry guards and their status.
         - the current bandwidth accounting values.
@@ -3438,104 +3437,104 @@ __DataDirectory__**/state**::
         - a short history of bandwidth usage, as produced in the server
           descriptors.
 
-__DataDirectory__**/sr-state**::
+__DataDirectory__/**`sr-state`**::
     _Authority only_. This file is used to record information about the current
     status of the shared-random-value voting state.
 
-__CacheDirectory__**/diff-cache**::
+__CacheDirectory__/**`diff-cache`**::
     _Directory cache only_. Holds older consensuses and diffs from oldest to
     the most recent consensus of each type compressed in various ways. Each
     file contains a set of key-value arguments describing its contents,
     followed by a single NUL byte, followed by the main file contents.
 
-__DataDirectory__**/bw_accounting**::
+__DataDirectory__/**`bw_accounting`**::
     This file is obsolete and the data is now stored in the **`state`** file
     instead. Used to track bandwidth accounting values (when the current period
     starts and ends; how much has been read and written so far this period).
 
-__DataDirectory__**/control_auth_cookie**::
+__DataDirectory__/**`control_auth_cookie`**::
     This file can be used only when cookie authentication is enabled. Used for
     cookie authentication with the controller. Location can be overridden by
     the `CookieAuthFile` configuration option. Regenerated on startup. See
     control-spec.txt in https://spec.torproject.org/[torspec] for details.
 
-__DataDirectory__**/lock**::
+__DataDirectory__/**`lock`**::
     This file is used to prevent two Tor instances from using the same data
     directory. If access to this file is locked, data directory is already in
     use by Tor.
 
-__DataDirectory__**/key-pinning-journal**::
+__DataDirectory__/**`key-pinning-journal`**::
     Used by authorities. A line-based file that records mappings between
     RSA1024 and Ed25519 identity keys. Authorities enforce these mappings, so
     that once a relay has picked an Ed25519 key, stealing or factoring the
     RSA1024 key will no longer let an attacker impersonate the relay.
 
-__KeyDirectory__**/authority_identity_key**::
+__KeyDirectory__/**`authority_identity_key`**::
     A v3 directory authority's master identity key, used to authenticate its
     signing key. Tor doesn't use this while it's running. The tor-gencert
     program uses this. If you're running an authority, you should keep this key
     offline, and not put it in this file.
 
-__KeyDirectory__**/authority_certificate**::
+__KeyDirectory__/**`authority_certificate`**::
     Only directory authorities use this file. A v3 directory authority's
     certificate which authenticates the authority's current vote- and
     consensus-signing key using its master identity key.
 
-__KeyDirectory__**/authority_signing_key**::
+__KeyDirectory__/**`authority_signing_key`**::
     Only directory authorities use this file. A v3 directory authority's
     signing key that is used to sign votes and consensuses. Corresponds to the
     **authority_certificate** cert.
 
-__KeyDirectory__**/legacy_certificate**::
+__KeyDirectory__/**`legacy_certificate`**::
     As authority_certificate; used only when `V3AuthUseLegacyKey` is set.  See
     documentation for V3AuthUseLegacyKey.
 
-__KeyDirectory__**/legacy_signing_key**::
+__KeyDirectory__/**`legacy_signing_key`**::
     As authority_signing_key: used only when `V3AuthUseLegacyKey` is set.  See
     documentation for V3AuthUseLegacyKey.
 
-__KeyDirectory__**/secret_id_key**::
+__KeyDirectory__/**`secret_id_key`**::
     A relay's RSA1024 permanent identity key, including private and public
     components. Used to sign router descriptors, and to sign other keys.
 
-__KeyDirectory__**/ed25519_master_id_public_key**::
+__KeyDirectory__/**`ed25519_master_id_public_key`**::
     The public part of a relay's Ed25519 permanent identity key.
 
-__KeyDirectory__**/ed25519_master_id_secret_key**::
+__KeyDirectory__/**`ed25519_master_id_secret_key`**::
     The private part of a relay's Ed25519 permanent identity key.  This key is
     used to sign the medium-term ed25519 signing key.  This file can be kept
     offline or encrypted. If so, Tor will not be able to generate new signing
     keys automatically; you'll need to use `tor --keygen` to do so.
 
-__KeyDirectory__**/ed25519_signing_secret_key**::
+__KeyDirectory__/**`ed25519_signing_secret_key`**::
     The private and public components of a relay's medium-term Ed25519 signing
     key. This key is authenticated by the Ed25519 master key, which in turn
     authenticates other keys (and router descriptors).
 
-__KeyDirectory__**/ed25519_signing_cert**::
+__KeyDirectory__/**`ed25519_signing_cert`**::
     The certificate which authenticates "ed25519_signing_secret_key" as having
     been signed by the Ed25519 master key.
 
-__KeyDirectory__**/secret_onion_key** and **secret_onion_key.old**::
+__KeyDirectory__/**`secret_onion_key`** and **`secret_onion_key.old`**::
     A relay's RSA1024 short-term onion key. Used to decrypt old-style ("TAP")
     circuit extension requests. The **`.old`** file holds the previously
     generated key, which the relay uses to handle any requests that were made
     by clients that didn't have the new one.
 
-__KeyDirectory__**/secret_onion_key_ntor** and **secret_onion_key_ntor.old**::
+__KeyDirectory__/**`secret_onion_key_ntor`** and **`secret_onion_key_ntor.old`**::
     A relay's Curve25519 short-term onion key. Used to handle modern ("ntor")
     circuit extension requests. The **`.old`** file holds the previously
     generated key, which the relay uses to handle any requests that were made
     by clients that didn't have the new one.
 
-__DataDirectory__**/fingerprint**::
+__DataDirectory__/**`fingerprint`**::
     Only used by servers. Contains the fingerprint of the server's identity key.
 
-__DataDirectory__**/hashed-fingerprint**::
+__DataDirectory__/**`hashed-fingerprint`**::
     Only used by bridges. Contains the hashed fingerprint of the bridge's
     identity key. (That is, the hash of the hash of the identity key.)
 
-__DataDirectory__**/approved-routers**::
+__DataDirectory__/**`approved-routers`**::
     Only used by authoritative directory servers. This file lists the status of
     routers by their identity fingerprint.  Each line lists a status and a
     fingerprint separated by whitespace. See your **`fingerprint`** file in the
@@ -3544,63 +3543,63 @@ __DataDirectory__**/approved-routers**::
     server. If it is **!invalid**, then the descriptors are accepted but marked
     in the directory as not valid, that is, not recommended.
 
-__DataDirectory__**/v3-status-votes**::
+__DataDirectory__/**`v3-status-votes`**::
     Only for v3 authoritative directory servers. This file contains status
     votes from all the authoritative directory servers.
 
-__CacheDirectory__**/unverified-consensus**::
+__CacheDirectory__/**`unverified-consensus`**::
     Contains a network consensus document that has been downloaded, but which
     we didn't have the right certificates to check yet.
 
-__CacheDirectory__**/unverified-microdesc-consensus**::
+__CacheDirectory__/**`unverified-microdesc-consensus`**::
     Contains a microdescriptor-flavored network consensus document that has
     been downloaded, but which we didn't have the right certificates to check
     yet.
 
-__DataDirectory__**/unparseable-desc**::
+__DataDirectory__/**`unparseable-desc`**::
     Onion server descriptors that Tor was unable to parse are dumped to this
     file. Only used for debugging.
 
-__DataDirectory__**/router-stability**::
+__DataDirectory__/**`router-stability`**::
     Only used by authoritative directory servers. Tracks measurements for
     router mean-time-between-failures so that authorities have a fair idea of
     how to set their Stable flags.
 
-__DataDirectory__**/stats/dirreq-stats**::
+__DataDirectory__/**`stats/dirreq-stats`**::
     Only used by directory caches and authorities. This file is used to
     collect directory request statistics.
 
-__DataDirectory__**/stats/entry-stats**::
+__DataDirectory__/**`stats/entry-stats`**::
     Only used by servers. This file is used to collect incoming connection
     statistics by Tor entry nodes.
 
-__DataDirectory__**/stats/bridge-stats**::
+__DataDirectory__/**`stats/bridge-stats`**::
     Only used by servers. This file is used to collect incoming connection
     statistics by Tor bridges.
 
-__DataDirectory__**/stats/exit-stats**::
+__DataDirectory__/**`stats/exit-stats`**::
     Only used by servers. This file is used to collect outgoing connection
     statistics by Tor exit routers.
 
-__DataDirectory__**/stats/buffer-stats**::
+__DataDirectory__/**`stats/buffer-stats`**::
     Only used by servers. This file is used to collect buffer usage
     history.
 
-__DataDirectory__**/stats/conn-stats**::
+__DataDirectory__/**`stats/conn-stats`**::
     Only used by servers. This file is used to collect approximate connection
     history (number of active connections over time).
 
-__DataDirectory__**/stats/hidserv-stats**::
+__DataDirectory__/**`stats/hidserv-stats`**::
     Only used by servers. This file is used to collect approximate counts
     of what fraction of the traffic is hidden service rendezvous traffic, and
     approximately how many hidden services the relay has seen.
 
-__DataDirectory__**/networkstatus-bridges**::
+__DataDirectory__/**networkstatus-bridges`**::
     Only used by authoritative bridge directories. Contains information
     about bridges that have self-reported themselves to the bridge
     authority.
 
-__HiddenServiceDirectory__**/hostname**::
+__HiddenServiceDirectory__/**`hostname`**::
     The <base32-encoded-fingerprint>.onion domain name for this hidden service.
     If the hidden service is restricted to authorized clients only, this file
     also contains authorization data for all clients.
@@ -3611,14 +3610,14 @@ __HiddenServiceDirectory__**/hostname**::
     can ask your clients to connect to "www.xyz.onion" or "irc.xyz.onion"
     for virtual-hosting purposes.
 
-__HiddenServiceDirectory__**/private_key**::
+__HiddenServiceDirectory__/**`private_key`**::
     Contains the private key for this hidden service.
 
-__HiddenServiceDirectory__**/client_keys**::
+__HiddenServiceDirectory__/**`client_keys`**::
     Contains authorization data for a hidden service that is only accessible by
     authorized clients.
 
-__HiddenServiceDirectory__**/onion_service_non_anonymous**::
+__HiddenServiceDirectory__/**`onion_service_non_anonymous`**::
     This file is present if a hidden service key was created in
     **HiddenServiceNonAnonymousMode**.