General improvement of docstrings

[jcurtis2]

No description provided.

[Copilot]

Pull Request Overview

Improves the consistency and clarity of function and property docstrings throughout the PyPartMC module by standardizing format and language conventions.

• Updates verb tenses from past/present inconsistencies to present tense (e.g., "Returns" → "Return")
• Adds missing periods to all docstrings for consistency
• Expands abbreviated descriptions to be more descriptive and clear

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.62%. Comparing base (bdd398a) to head (fcc6803).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #447   +/-   ##
=======================================
  Coverage   90.62%   90.62%           
=======================================
  Files          55       55           
  Lines        2516     2516           
  Branches      142      142           
=======================================
  Hits         2280     2280           
  Misses        163      163           
  Partials       73       73           

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