Shortened snippet links didn't include the anchor to the line
### Summary Here's the example: https://gitlab.com/gitlab-org/gitlab-ce/snippets/20077#L4759 It should show like: [$20077#L4759](https://gitlab.com/gitlab-org/gitlab-ce/snippets/20077#L4759) ### Steps to reproduce Paste `https://gitlab.com/gitlab-org/gitlab-ce/snippets/20077#L4759` and preview it ### What is the current *bug* behavior? [$20077](https://gitlab.com/gitlab-org/gitlab-ce/snippets/20077)#L4759 ### What is the expected *correct* behavior? [$20077#L4759](https://gitlab.com/gitlab-org/gitlab-ce/snippets/20077#L4759) ### Output of checks This bug happens on GitLab.com This was discovered at https://gitlab.com/gitlab-org/gitlab-ce/issues/49640#note_115866033
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