📝 Fix formatting for help link to support GitHub-specific overview edge-case

[phalberg]

Pull Request

Based on
Discussion: #1794

Description

Changed the link of help-typer in contributions.md to handle GitHub overview edge case, where the link would come to a 404 error when clicked (since it resolved to the wrong location).

AI Disclaimer

I did not use AI in the process of making this PR.

AI transcript

Checklist

• This PR is an obvious typo fix, or it links to a GitHub Discussion for the proposed code change.
• I added tests for the change.
• The new or updated tests fail on the main branch and pass on this PR.
• Coverage stays at 100%.
• The documentation explains the change if needed.

[github-actions]

📝 Docs preview

Last commit a746bff at: https://99595fba.typertiangolo.pages.dev

Modified Pages

• https://99595fba.typertiangolo.pages.dev/contributing/ - (before)

[svlandeg]

Thanks for the PR! Also appreciate you going through the discussion forum first before making a PR. Everything has already been discussed there so this is good to merge now 🎉