Fixed some docstrings

[ewu63]

Purpose

There are a lot more problems, but I fixed some docstrings while working on the code.

Expected time until merged

Whenever

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

[codecov]

Codecov Report

Merging #137 (8051074) into main (e727de8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #137   +/-   ##
=======================================
  Coverage   62.62%   62.62%           
=======================================
  Files          45       45           
  Lines       11219    11219           
=======================================
  Hits         7026     7026           
  Misses       4193     4193           

Impacted Files	Coverage Δ
pygeo/constraints/DVCon.py	70.83% <ø> (ø)
pygeo/parameterization/DVGeo.py	64.40% <ø> (ø)
pygeo/pyBlock.py	47.02% <ø> (ø)

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