Gitlab/DocUrl: Resolve offenses in HAML

Problem

In !108558 (merged) we've added a new 👮 rule to prevent hardcoding doc urls in strings.

We had to disable this rule for haml-lint because it does not support TODOs per cop rule 😞

Proposed solution

Fix these offenses in HAML as soon as possible to prevent new offenses sneaking in.

Steps:

• Resolve offenses (see https://gitlab.com/sato11/gitlab/-/jobs/3600876110#L1307 and TBD)
• Enable this cop in .haml-lint.yml

Discussion

The following discussion from !108558 (merged) should be addressed:

• @splattael started a discussion:

  We should resolve these offenses in HAML as soon as possible to prevent new offenses sneaking in. After that we can enable this cop here again.

  I'll create a follow-up issue 💪