GitLab version dropdown entries not correct for 13.x and 12.x versions
Description
After the 14.4 release, the 14.x versions of the GitLab docs site are reporting the correct versions of GitLab documentation.
The 13.x and 12.x versions of the GitLab docs don't seem to contain the correct GitLab versions, however:
13.x
12.x
Deliverable
The deliverable is one or more MRs that ensure that the 12.x and 13.x GitLab docs pages have version dropdowns that match the GitLab docs versions on the 14.x pages.