The link to the Subversion project on https://www.freebsd.org/developers/cvs.html points to its former home page (http://subversion.tigris.org/), not to the current one (http://subversion.apache.org/). As a side note, it would be convenient to have links to the actual repositories on that site, not only to the web interface.
I thought I had submitted my local patches to fix this and several other broken links but it seems I have not yet. Take.
just noticed this too. Fixing.
A commit references this bug: Author: eadler Date: Fri Dec 22 14:48:00 UTC 2017 New revision: 51329 URL: https://svnweb.freebsd.org/changeset/doc/51329 Log: subversion: update URL The link to the Subversion project points to its former home page. PR: 221068 Reported by: philipp.kloke <philipp.kloke@web.de> Changes: head/en_US.ISO8859-1/htdocs/developers/cvs.xml