DOC: fix docstring of core.comon.pipe (PR02)
Solves:
- Unknown parameters {kwargs, args}
- Parameter "func" type should use "str" instead of "string"
- Parameter "*args" description should start with a capital letter
- Parameter "**kwargs" description should start with a capital letter
- pandas.core.common.pipe : Unknown parameters {kwargs, args} in #27976 

@AminooZ thanks a lot!