Fix SS06 formatting errors
Fixing more SS06 issues, mentioned in #29254 

Fixed docstrings for the following:
- pandas.DataFrame
- pandas.DataFrame.transform
- pandas.DataFrame.corrwith
- pandas.DataFrame.describe
- pandas.DataFrame.kurt
- pandas.DataFrame.kurtosis
- pandas.DataFrame.skew
- pandas.DataFrame.align
- pandas.DataFrame.drop_duplicates
- pandas.DataFrame.duplicated
Hello @deepandas11! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:





There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2019-10-31 07:37:34 UTC Repeating this comment in this PR, since this cause conflicts if one gets merged first?

> Hi @deepandas11, looks like we edited the same issues in two different pull requests, but it looks like yours passed checks. Moving forward maybe we can have people claim the issues so we can reduce redundant work?

https://github.com/pandas-dev/pandas/issues/29254#issuecomment-548193511 I think this was already covered by the other PR