navigation fix

[Alessandro100]

Summary:

BUG

When navigating from the header it would be relative paths ex https://mobilitydatabase.org/feeds-> click header FAQ -> https://mobilitydatabase.org/feeds/faq

FIX

https://mobilitydatabase.org/feeds-> click header FAQ -> https://mobilitydatabase.org/faq

Expected behavior:

https://mobilitydatabase.org/feeds-> click header FAQ -> https://mobilitydatabase.org/faq

Testing tips:

Navigate from anywhere using header

Please make sure these boxes are checked before submitting your pull request - thanks!

• [ ] Run the unit tests with ./scripts/api-tests.sh to make sure you didn't break anything
• [ ] Add or update any needed documentation to the repo
• [ ] Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• [ ] Linked all relevant issues
• [ ] Include screenshot(s) showing how this pull request works and fixes the issue(s)

[github-actions[bot]]

Preview Firebase Hosting URL: https://mobility-feeds-dev--pr-728-wxgnt60q.web.app