warnings.catch_warnings docs: dubious mention of sys.stdout

https://docs.python.org/3/library/warnings.html#warnings.catch_warnings reads:

If record is True, a list is returned that is progressively populated with objects as seen by a custom showwarning() function (which also suppresses output to sys.stdout).

Was it meant to say sys.stderr instead?
Otherwise, I don't understand why it mentions stdout specifically. I don't see anything about stdout elsewhere in the module docs or in the implementation.

Linked PRs

• gh-130768

从 docs.python.org/library/warnings.html 中的 warnings.catch_warnings 部分开始，并将其中关于 sys.stdout 的表述与 warnings 模块的实现进行比较。先检查链接的 PR gh-130768；当文档准确描述输出流，并且由此产生的文档更改与实现一致时，即表示完成。