Feature/revise docstrings

[MartinKl]

#440

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.46%. Comparing base (795e431) to head (cf4872c).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
src/manipulator/re.rs	66.66%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #490      +/-   ##
==========================================
+ Coverage   84.43%   84.46%   +0.02%     
==========================================
  Files          66       66              
  Lines       24248    23826     -422     
  Branches    24248    23826     -422     
==========================================
- Hits        20475    20125     -350     
+ Misses       1470     1454      -16     
+ Partials     2303     2247      -56     

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