fix(github): point the stuck-FAQ auto-response at a live anchor (#143…

fix(github): point the stuck-FAQ auto-response at a live anchor (#143194)

The r: support auto-response links to
/help/faq#im-stuck-whats-the-fastest-way-to-get-unstuck. That anchor does
not exist on /help/faq and did not before the FAQ split — the content moved
to the first-run FAQ in an earlier split, and the id changed spelling at the
same time. Anyone closed with this label has been sent to a page that scrolls
nowhere.

The live target is /help/faq-first-run#i-am-stuck-fastest-way-to-get-unstuck,
which the first-run FAQ index publishes as an authored stub.

docs-link-audit does not cover this because the URL lives in a script rather
than a docs page.