DOC: Misc documentation and style fixes

[jhlegarreta]

• DOC: Fix typos and grammar
• STYLE: Remove too many blank lines between functions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.27%. Comparing base (390f11d) to head (3c7f0bd).
Report is 103 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #102   +/-   ##
=======================================
  Coverage   58.27%   58.27%           
=======================================
  Files          22       22           
  Lines        2085     2085           
  Branches      321      321           
=======================================
  Hits         1215     1215           
  Misses        787      787           
  Partials       83       83           

Flag	Coverage Δ
unittests	58.27% <ø> (ø)

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