Update link to documentation

What does this MR do?

Updates the link to the merge request documentation.

Are there points in the code the reviewer needs to double check?

no

Why was this MR needed?

The documentation was moved, so the user has to click twice.

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

/cc @axil