Remove `.md` from help_page links
What does this MR do and why?
Fix Haml offenses
- Disallow
.md
extension usage (as recommended by https://docs.gitlab.com/ee/development/documentation/help#linking-to-help)
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
-
I have evaluated the MR acceptance checklist for this MR.
Edited by Vasilii Iakliushin