Fix broken RSS icon (wasn't using the root path in URL)

ff418552f8aaf69d257ace6121fae44dc6e5729c

Tucker McKnight <tmcknight@instructure.com> | Sun Jul 19 2026

Fix broken RSS icon (wasn't using the root path in URL)

Also change wording of the title for the RSS feed. "patches" is
left over from when this was written for darcs. Also, should
include the name of the repo in the title.