Add documentation on rtd.

[tobiasraabe]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.95%. Comparing base (ac2fda1) to head (916fa8b).

❗ Current head 916fa8b differs from pull request most recent head e00ff03. Consider uploading reports for the commit e00ff03 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #93   +/-   ##
=======================================
  Coverage   90.95%   90.95%           
=======================================
  Files          17       17           
  Lines         652      652           
=======================================
  Hits          593      593           
  Misses         59       59           

Flag	Coverage Δ
end_to_end	88.95% <ø> (ø)
unit	52.14% <ø> (ø)

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