[PR #10301/77f25a0a backport][3.11] Update docs for aiohttp.request

[patchback]

This is a backport of PR #10301 as merged into master (77f25a0).

What do these changes do?

Noticed that the content of aiohttp.request reference in documentation needs to be changed after #10300 . This pr update docs for that.

Are there changes in behavior for the user?

Is it a substantial burden for the maintainers to support this?

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

[codspeed-hq]

CodSpeed Performance Report

Merging #10307 will improve performances by 9.13%

_{Comparing patchback/backports/3.11/77f25a0a4da3cc20f4c5b6d12be9d273ea02f1df/pr-10301 (ec01e17) with 3.11 (0c32bc8)}

Summary

⚡ 1 improvements
✅ 46 untouched benchmarks

Benchmarks breakdown

	Benchmark	3.11	patchback/backports/3.11/77f25a0a4da3cc20f4c5b6d12be9d273ea02f1df/pr-10301	Change
⚡	test_get_request_with_251308_compressed_chunked_payload[pyloop]	464.9 ms	426 ms	+9.13%