Update documentation following Admin Area settings split into sub-pages
Problem to solve
With https://gitlab.com/gitlab-org/gitlab-ce/issues/44998, we added a better structure for 35+ sections in the Admin Area settings by structuring them into new individual sub-pages. Unfortunately, this was not reflected in updated doc descriptions/links that guide towards these sections.
Further details
One example by @jeremy_ (https://docs.gitlab.com/ee/user/admin_area/settings/usage_statistics.html):
It took me a while to find usage ping since it’s no longer in Settings > Usage statistics. It’s in Settings > some sub-menu I can’t remember > Usage statistics
Proposal
I don't know what the best approach is to review this, but I guess that looking into https://docs.gitlab.com/ee/user/admin_area/settings and updating navigation references is a good start.