ruff

d4b4f65e - [`pep8-naming`] Clarify preview behavior in `invalid-first-argument-name-for-class-method` (`N804`) (#16193)

[`pep8-naming`] Clarify preview behavior in `invalid-first-argument-name-for-class-method` (`N804`) (#16193) Adds clarification in the documentation for [invalid-first-argument-name-for-class-method (N804)](https://docs.astral.sh/ruff/rules/invalid-first-argument-name-for-class-method/#invalid-first-argument-name-for-class-method-n804) (Also fixes an unrelated typo).