Some links don't render correctly

Description

Possibly as a result of https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/108, a link in this section doesn't render correctly: https://docs.gitlab.com/ce/ci/environments.html#go-directly-from-source-files-to-public-pages-on-the-environment.

The same link renders fine in the following two places:

• In /help: https://gitlab.com/help/ci/environments.html#go-directly-from-source-files-to-public-pages-on-the-environment.
• In "native GitLab": https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/ci/environments.md#go-directly-from-source-files-to-public-pages-on-the-environment.

Because it's supported elsewhere, we should support it in docs.gitlab.com.