Fix sphinx documentation issues

[Miauwkeru]

• Enable fail on warning for docs generation
• Fix documentation issues

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.37%. Comparing base (bffdcac) to head (7964cc6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   82.38%   83.37%   +0.99%     
==========================================
  Files           7        7              
  Lines         386      379       -7     
==========================================
- Hits          318      316       -2     
+ Misses         68       63       -5     

Flag	Coverage Δ
unittests	83.37% <100.00%> (+0.99%)	⬆️

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[Schamper]

What's this for?

[Miauwkeru]

keeping it consistent with dissect-docs, and dissect.cstruct. I'd personally prefer that each project has consistent configuration

[Schamper]

None of the other projects have it so the question then becomes, which one defines consistency 😄 also didn't really answer the question, what's it for?

[Miauwkeru]

ref is indeed not needed on this project, the autoapi.python_import_resolution is

[Schamper]

This will break dissect.target: https://github.com/fox-it/dissect.target/blob/main/dissect/target/filesystems/qnxfs.py

Can you make a linked PR?