Non-functional sub-navbar links on the Contribute page

[AnasChebili]

Description:

I noticed that several sub-navbar links on the Contribute page are non-functional.

The Data link works correctly, adding #data to the URL and linking to the corresponding section.

However, the other links add #{expected-section} (e.g., #bugs, #support, etc.) to the URL but don’t lead anywhere because no corresponding elements exist on the page.

I verified that only the DATA section exists on the page so the other links currently serve no purpose.

Proposed Solution:

I found relevant content for each missing section on the OpenPrinting wiki: How to Contribute
(scroll down a bit, some links there are also broken, but the content exists)

Since the DATA section was copied word-for-word from this wiki page, I believe that this is the intended source. I can add the existing content from the wiki to match the existing format.

Would you like me to proceed with this fix?