See https://discourse.phabricator-community.org/t/navigating-to-changed-files-in-diffusion-does-not-work-anymore/433.

In D18465, I updated these but this hard-coded the anchor for some reason (???) and I missed it while grep-ing.

Viewed a commit (/rXYZaaaa) and clicked a file link in the table of contents. Got modern #change-... anchor and navigation into the document.