Docs: remove line breaks in md intros for unfurls

[lukegalbraithrussell]

Summary

The classic code practice of breaking lines at x characters long messed up the unfurls. Removed the line breaks

Oh I just noticed the path in this template still says /docs-src so I changed it to /docs in this PR too

Testing

You can run it locally to see that it works, but it works. You can't test unfurls locally though

Category

• /docs (Documents)

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run python3 -m venv .venv && source .venv/bin/activate && ./scripts/run_validation.sh after making the changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.97%. Comparing base (54f8e72) to head (7bfda1b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1538      +/-   ##
==========================================
+ Coverage   84.94%   84.97%   +0.03%     
==========================================
  Files         113      113              
  Lines       12498    12498              
==========================================
+ Hits        10616    10620       +4     
+ Misses       1882     1878       -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[WilliamBergamin]

Good catches 💯