Merge branch 'make-top-level-git-page-like-other-top-level-pages' into 'master'

Make the top-level Git page like other top-level pages

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159036



Merged-by: Fiona Neill <fneill@gitlab.com>
Reviewed-by: Fiona Neill <fneill@gitlab.com>
Co-authored-by: Evan Read <eread@gitlab.com>