CLN: Use kwargs instead of kwds in apply functions
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them

I've applied the change here to the API function `apply` but I don't believe this is an API change as you cannot pass to `**kwds` (or `**kwargs`) by name.
thanks yep, this is not user facing. we *could* have a rule for this to prevent recurrences (but prob no big deal)