DOC: Added docstring for show_versions()
- [x] closes #33044
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

@TomAugspurger, connected with issue #33044 You can ignore the CI failure. Hello @MarianD! 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 2020-03-30 14:23:01 UTC @MarianD Can you please merge master? > 
> 
@MomIsBestFriend 
> @MarianD Can you please merge master?

I merged my “docstring” branch into “master” in my fork and created pull request for that branch (master) — is it what you expected?

 > > 
> 
> @MomIsBestFriend
> 
> > @MarianD Can you please merge master?
> 
> I merged my “docstring” branch into “master” in my fork and created pull request for that branch (master) — is it what you expected?

@MarianD sorry this is not what I expected, but it's perfectly fine.

I should have been more specific, what I meant was "please update your pull request"

https://dev.pandas.io/docs/development/contributing.html#updating-your-pull-request

This is necessary due to a failure we had in our CI (continues interrogation), and updating your PR (pull request) would solve this. Thanks!