https://docs.gitlab.com/ce/ci/yaml/#validate-the-gitlab-ci-yml
via https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/17729/diffs#note_69939014
this says: https://gitlab.com/gitlab-org/gitlab-ce/ci/lint but it should be: https://gitlab.com/gitlab-org/gitlab-ce/-/ci/lint
this says:
but it should be: