feat(adhoc-tools-accessible-names): Add guidance link

[ZakiyaN0]

Details

This PR adds the correct link, to which a user is directed to when the "How to test Accessible names" link is clicked.

Motivation

Feature request #4864

Context

When the "How to test accessible names" link is clicked, the user is redirected to a new page that has some content on why accessible names are important.

Pull request checklist

• [x] Addresses an existing issue: #0000
• [x] Ran yarn fastpass
• [x] Added/updated relevant unit test(s) (and ran yarn test)
• [x] Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• [x] PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). See CONTRIBUTING.md.
• [x] (UI changes only) Added screenshots/GIFs to description above
• [ ] (UI changes only) Verified usability with NVDA/JAWS