Fix docs examples & typos

[siahuat0727]

What does this PR do?

Fixes docs typo

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[codecov]

Codecov Report

Merging #4930 (1d9516c) into master (4218c59) will decrease coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #4930   +/-   ##
======================================
- Coverage      93%     93%   -0%     
======================================
  Files         134     134           
  Lines       10056   10056           
======================================
- Hits         9391    9384    -7     
- Misses        665     672    +7     

[tchaton]

LTGM !

[Borda]

mind check the failing docs examples?

[awaelchli]

@Borda this failing gpu test comes from master