fix(docs): Align Typer CLI option required/default with Typer rules

[EspenAlbert]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.40%. Comparing base (67d8bf3) to head (01a60e9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg_ext/_internal/signature_parser.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
+ Coverage   80.38%   80.40%   +0.01%     
==========================================
  Files          80       80              
  Lines        5032     5037       +5     
==========================================
+ Hits         4045     4050       +5     
  Misses        987      987              

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