SlevomatCodingStandard.TypeHints.ReturnTypeHint docs

[kkmuffme]

Afaik the docs are wrong for SlevomatCodingStandard.TypeHints.ReturnTypeHint:

This sniff can cause an error if you're overriding or implementing a parent method which does not have typehints. In such cases add @phpcsSuppress SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint annotation to the method to have this sniff skip it.

However for the return type hint, this doesn't matter: https://3v4l.org/el8LC#v8.4.6 (this is only an issue for properties/params)