Fix docs review apps URL (!3369) · Merge requests · GitLab.org / charts / GitLab Chart · GitLab

What does this MR do?

Fixes the docs review apps URL that is present in the MR widget.

This should have been the same as https://gitlab.com/gitlab-org/gitlab/-/blob/d33cde7e0986707a572f3c4e5cbdc55a03a1dd26/.gitlab/ci/docs.gitlab-ci.yml#L16-21.

Found out when enabling review apps for the Operator gitlab-org/cloud-native/gitlab-operator!680 (merged).