remove TODO comment and update error message

src/add-to-project.ts

@@ -1,8 +1,6 @@
 import * as core from '@actions/core'
 import * as github from '@actions/github'
 
-// TODO: Ensure this (and the Octokit client) works for non-github.com URLs, as well.
-// https://github.com/orgs|users/<ownerName>/projects/<projectNumber>
 const urlParse =
   /\/(?<ownerType>orgs|users)\/(?<ownerName>[^/]+)\/projects\/(?<projectNumber>\d+)/
 
@@ -80,7 +78,7 @@ export async function addToProject(): Promise<void> {
 
   if (!urlMatch) {
     throw new Error(
-      `Invalid project URL: ${projectUrl}. Project URL should match the format <Github server FQDN>/<orgs-or-users>/<ownerName>/projects/<projectNumber>`,
+      `Invalid project URL: ${projectUrl}. Project URL should match the format <Github server domain name>/<orgs-or-users>/<ownerName>/projects/<projectNumber>`,
     )
   }