Add link to release cycle page

[evilnick]

Done

• Added link at top of version info to point to the release cycle page
• this also pulls in some tidy-ups to the same page.

QA

• Check out this feature branch
• Run the site using the command ./run serve or dotrun
• View the site locally in your web browser at: http://0.0.0.0:8001/kubernetes/docs/supported-versions
  • Be sure to test on mobile, tablet and desktop screen sizes

Issue / Card

Fixes #13252

[webteam-app]

Demo starting at https://ubuntu-com-13255.demos.haus

[codecov]

Codecov Report

Merging #13255 (d468122) into main (621f09d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main   #13255   +/-   ##
=======================================
  Coverage   75.31%   75.31%           
=======================================
  Files         106      106           
  Lines        2840     2840           
  Branches      929      929           
=======================================
  Hits         2139     2139           
  Misses        679      679           
  Partials       22       22           

[mtruj013]

LGTM!