DOC: Validate that See Also section items do not contain the pandas. prefix
Fix #23136 
Please also see similar PR #23143 
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23145?src=pr&el=h1) Report
> Merging [#23145](https://codecov.io/gh/pandas-dev/pandas/pull/23145?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/f662c5f2a7b392ee96a43f055073c8523f8f0339?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23145/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23145?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23145   +/-   ##
=======================================
  Coverage   92.22%   92.22%           
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  Files         169      169           
  Lines       51261    51261           
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  Hits        47277    47277           
  Misses       3984     3984
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.66% <ø> (ø)` | :arrow_up: |
| #single | `42.23% <ø> (ø)` | :arrow_up: |


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 The one I posted is a slightly different issue also affecting the 'See Also' section.(23135/23136)  I think you may have missed pushing a commit somehow, because I'm only seeing the blank line changes.  Hello @thoo! Thanks for updating the PR.

 - There are no PEP8 issues in the file [`scripts/tests/test_validate_docstrings.py`](https://github.com/thoo/pandas/blob/af8cf4608876806ed005ee41f7bca82ee289dcab/scripts/tests/test_validate_docstrings.py) !

 - There are no PEP8 issues in the file [`scripts/validate_docstrings.py`](https://github.com/thoo/pandas/blob/af8cf4608876806ed005ee41f7bca82ee289dcab/scripts/validate_docstrings.py) !



##### Comment last updated on October 15, 2018 at 17:29 Hours UTC @getschomp  Thanks. I just updated.  Thanks. I will work on them.  Can you check the azure error, and make sure it's green, so we can merge? > Can you check the azure error, and make sure it's green, so we can merge?

The error is from miniconda package. 

```
2018-10-24T17:02:31.2718145Z C:\Miniconda\envs\pandas\lib\site-packages\matplotlib\colorbar.py:28: in <module>
2018-10-24T17:02:31.2718445Z     import matplotlib.artist as martist
2018-10-24T17:02:31.2719232Z E   AttributeError: module 'matplotlib' has no attribute 'artist'
2018-10-24T17:02:31.4445103Z ##[error]Cmd.exe exited with code '4'.
``` @WillAyd, can you take a look and merge if you're happy? Thanks @thoo 