Update .readthedocs.yaml

[kmuehlbauer]

• Closes #xxxx
• Tests added
• Changes are documented in history.md

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.81%. Comparing base (896b456) to head (cf0316e).
Report is 23 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #182   +/-   ##
=======================================
  Coverage   91.81%   91.81%           
=======================================
  Files          23       23           
  Lines        4519     4519           
=======================================
  Hits         4149     4149           
  Misses        370      370           

Flag	Coverage Δ
notebooktests	78.24% <ø> (ø)
unittests	90.06% <ø> (ø)

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