I changed the topic title for the FAQ/Guidelines page and consequently the page slug changed.
Discourse is set for a default guidelines page slug of /guidelines. Searching under Customize > Text for “guidelines” brings up a 21 references to [community guidelines](%{base_url}/guidelines), and these references don’t change if the page slug changes.
I’d like to suggest a method—admin field or automatic process—for updating those references if the guidelines page slug changes.