Docstring Validator Fails when 'integer' is valid argument
There's at least one function where 'integer' is documented as an acceptable argument:

https://github.com/dsaxton/pandas/blob/120540448036a6eb64a80393f575bb31c38d8cc4/pandas/core/series.py#L1542

The docstring validator confuses this for a type then errors out by saying `integer` should be replaced with `int`

cc @dsaxton 