rcodezero: fix documentation

[MikeAT]

Documentation fix for rcodezero driver

Description

This PR fixes the link to the rcodezero API documentation and removes the unimplemented methodes from the generated documentation (#2041)

Status

done

Checklist (tick everything that applies)

• Code linting (required, can be done after the PR checks)
• Documentation
• Tests
• ICLA (required for bigger changes)

[klaus-nicat]

Hello! Is there any reason why this simple PR is not merged yet? Thanks

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.40%. Comparing base (4433657) to head (01336b4).
Report is 31 commits behind head on trunk.

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk    #2032   +/-   ##
=======================================
  Coverage   83.40%   83.40%           
=======================================
  Files         353      353           
  Lines       81685    81685           
  Branches     8632     8632           
=======================================
  Hits        68124    68124           
  Misses      10738    10738           
  Partials     2823     2823           

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