Spelling fixes

[scop]

What do these changes do?

SSIA. Thanks to https://github.com/crate-ci/typos

Are there changes in behavior for the user?

No.

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep alphabetical order, the file is sorted by names.
• Add a new news fragment into the CHANGES folder
  • name it <issue_id>.<type> for example (588.bugfix)
  • if you don't have an issue_id change it to the pr id after creating the pr
  • ensure type is one of the following:
    • .feature: Signifying a new feature.
    • .bugfix: Signifying a bug fix.
    • .doc: Signifying a documentation improvement.
    • .removal: Signifying a deprecation or removal of public API.
    • .misc: A ticket has been closed, but it is not of interest to users.
  • Make sure to use full sentences with correct case and punctuation, for example: "Fix issue with non-ascii contents in doctest text files."

[codecov]

Codecov Report

Merging #5897 (6c3dc9a) into master (ae23fd6) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #5897   +/-   ##
=======================================
  Coverage   96.75%   96.75%           
=======================================
  Files          44       44           
  Lines        9851     9851           
  Branches     1591     1591           
=======================================
  Hits         9531     9531           
  Misses        182      182           
  Partials      138      138           

Flag	Coverage Δ
unit	96.65% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
aiohttp/http_parser.py	97.46% <100.00%> (ø)

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[patchback]

Backport to 3.8: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.8/816e0bc81bb809f54fd7a88cd699a93a75b82885/pr-5897

Backported as #6111

🤖 @patchback
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