Action for dead links

[ozzieD]

• Fixes Automate Dead Link Detection in Docs #1977
• We want an automated way to check for deadlinks in our documentation. This MR introduces an action that checks our latest documentation for deadlinks recursively.

[codecov]

Codecov Report

Merging #2084 (26ac00a) into main (01476b5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2084   +/-   ##
=======================================
  Coverage   99.20%   99.20%           
=======================================
  Files         143      143           
  Lines       16555    16555           
=======================================
  Hits        16423    16423           
  Misses        132      132           

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