Merge branch 'docs-faleksic-master-patch-87096' into 'master'

Add forward slash to all routes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/154362



Merged-by: Jon Glassman <jglassman@gitlab.com>
Approved-by: Jon Glassman <jglassman@gitlab.com>
Co-authored-by: Filip Aleksic <faleksic@gitlab.com>