Open
Description
Imagine a config file like this:
[mypy-package.lib.uitls]
disallow_any_generics = True
There is a typo in the section name so the stricter option is not actually applied. Another (probably more common) situation is when a file is moved to a different place, but the config is not updated.
I think we should make it an error (or warning, similar to unrecognized config option) if there is an unmatched section without * wildcards.