docs: fix small grammar mistakes

[maybeanerd]

Description

This fixes a few small things about the grammar on the home page of the docs.

Linked Issues

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Additional context

Pls squash on merge, I did this from my smartphone which is why there's multiple commits 😅

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.31%. Comparing base (fa42db5) to head (16e7f82).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #627   +/-   ##
=======================================
  Coverage   96.31%   96.31%           
=======================================
  Files          70       70           
  Lines        5699     5699           
  Branches      755      755           
=======================================
  Hits         5489     5489           
  Misses        205      205           
  Partials        5        5           

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