ICU-22722 Fix broken link to faq in docs/userguide/icu/index.md

[aszasz]

Checklist

• [v] Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22722
• [v] Required: The PR title must be prefixed with a JIRA Issue number.
• [v] Required: The PR description must include the link to the Jira Issue, for example by completing the URL in the first checklist item
• [v] Required: Each commit message must be prefixed with a JIRA Issue number.
• [v] Issue accepted (done by Technical Committee after discussion)
• [v] Tests included, if applicable
• [v] API docs and/or User Guide docs changed or added, if applicable

[CLAassistant]

All committers have signed the CLA.

[echeran]

Thanks! We just need the commit message to be amended so that it begins with "ICU-22722 ". The whitespace in between the ticket number and commit message is also important. If you want the commit message to be the same as the PR title, that works.

The easiest way to fix the commit message is to click the "Details" button next to the jira-ticket CI check, click the "Squash" button (even though you're not changing the contents), and then use the opportunity to reword the commit message.

[jira-pull-request-webhook]

Hooray! The files in the branch are the same across the force-push. 😃

~ Your Friendly Jira-GitHub PR Checker Bot

[echeran]

LGTM. Thanks!