Fix doc

[twiggler]

• detect warnings
• fix typo

(detected in monorepo)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.89%. Comparing base (8baa8f6) to head (e6a734d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #85   +/-   ##
=======================================
  Coverage   80.89%   80.89%           
=======================================
  Files          26       26           
  Lines        2381     2381           
=======================================
  Hits         1926     1926           
  Misses        455      455           

Flag	Coverage Δ
unittests	80.89% <ø> (ø)

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