Fix some typos in docs

[fkmy]

What does this PR do?

Fix a small typo in docs

Motivation:

I was reading the document and found what I thought was a typo.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.86%. Comparing base (8c1809d) to head (42a2559).
Report is 7 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3914   +/-   ##
=======================================
  Coverage   97.85%   97.86%           
=======================================
  Files        1285     1285           
  Lines       76951    76952    +1     
  Branches     3789     3789           
=======================================
+ Hits        75303    75310    +7     
+ Misses       1648     1642    -6     

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[ivoanjo]

Oh wow, those are a lot of typos 😅.

Thanks a lot for catching them and fixing them 🙏

I'm going to merge this ASAP, just need CI to finish :)