DOCS: Fix docstrings to comply with numpydoc style.

[MaxJPRey]

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Issue linked

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Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.21%. Comparing base (11e41ba) to head (f2fc7a7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6231      +/-   ##
==========================================
+ Coverage   85.19%   85.21%   +0.01%     
==========================================
  Files         170      170              
  Lines       64209    64209              
==========================================
+ Hits        54704    54713       +9     
+ Misses       9505     9496       -9     

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[SMoraisAnsys]

LGTM