Fix logic for checking documentation framework

[CasperWA]

Fixes #152

I started out creating a separate bash script to call for these checks. In that way it was possible to unit test the bash parts run in the workflow.
However, it turned out to be quite overkill for what's needed, så instead I fixed the immediate issue and attempted to search for more.

In the end, it might still be nice to have a separate bash script - or even implement utility tools into the Python ci-cd package - to call and have separate unit tests for to ensure it all works as intended.

[codecov]

Codecov Report

Merging #153 (c8ebff5) into main (5987a04) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #153   +/-   ##
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  Coverage   65.67%   65.67%           
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  Files           9        9           
  Lines         472      472           
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  Hits          310      310           
  Misses        162      162