chore(docs): fix spelling and grammar errors

[maradini77]

Fix typos and missing prepositions in documentation files:

• Fix "Doucumentation" → "Documentation"
• Fix "hoever" → "however"
• Fix "refer the" → "refer to the"

[danceratopz]

👍

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.26%. Comparing base (cef416a) to head (61f55e6).
⚠️ Report is 3 commits behind head on forks/amsterdam.

Additional details and impacted files

@@               Coverage Diff                @@
##           forks/amsterdam    #1950   +/-   ##
================================================
  Coverage            86.26%   86.26%           
================================================
  Files                  538      538           
  Lines                34557    34557           
  Branches              3222     3222           
================================================
  Hits                 29809    29809           
  Misses                4161     4161           
  Partials               587      587           

Flag	Coverage Δ
unittests	86.26% <ø> (ø)

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