Repoint them to their current locations.

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/433277

Update the links in all docs except user and admin pages

Because the left nav is changing
and will have a button instead
of carat, and no magnifying glass.

Related to: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/127935

Remove final usage of CI/CD minutes across the docs

Because we don't use that style
See: https://docs.gitlab.com/ee/development/documentation/styleguide/word_list.html\#note-that

Because we are trying to make
the top-level pages consistent
This MR moves content to free-
standing pages