Merge branch '396315-aqualls-split-out-errors' into 'master'

Move CODEOWNERS syntax reference to a child page

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/117464



Merged-by: Kati Paizee <kpaizee@gitlab.com>
Approved-by: Kati Paizee <kpaizee@gitlab.com>
Reviewed-by: Kati Paizee <kpaizee@gitlab.com>
Co-authored-by: Amy Qualls <aqualls@gitlab.com>