Merge branch 'axil-document-pages-root-yaml' into 'master'

Document the pages:publish property in CI YAML reference

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/124289



Merged-by: Marcel Amirault <mamirault@gitlab.com>
Reviewed-by: Achilleas Pipinellis <axil@gitlab.com>
Reviewed-by: Marcel Amirault <mamirault@gitlab.com>
Reviewed-by: Janis Altherr <jaltherr@gitlab.com>
Co-authored-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: Janis Altherr <jaltherr@gitlab.com>