Address CodeRabbit re-review on #3771: rewriteRuleLinks now tracks fenced
code blocks (``` and ~~~) line by line and only rewrites links outside
them, so Markdown examples shown inside fences stay verbatim. One shipped
rule contains such an example, so this changes installed output today.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>