DOC: Plotting / Visualization without Jupyter
Added a note at the top of the page clarifying that the examples assume you're working jupyter.  @MarcoGorelli asked to be tagged to this PR. Hopefully I did everything correctly as this is my first PR.

- [x] closes #47861 (Replace xxxx with the Github issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Looks like there's an (unrelated) doc build failure, will revisit this later once that's fixed Hi @MarcoGorelli @tpackard1 ,

should we also mention the `plt.savefig()` function, which allows one to save the pandas object as an image file? This is useful if executed either in a script or in the Python interpreter command line. 

We can probably copy and paste from a push [I made on my fork](https://github.com/nwoodweb/pandas-woodn/commit/98e795469add2868e392220bc057c87152534700). > Hi @MarcoGorelli @tpackard1 ,
> 
> should we also mention the `plt.savefig()` function, which allows one to save the pandas object as an image file? This is useful if executed either in a script or in the Python interpreter command line.
> 
> We can probably copy and paste from a push [I made on my fork](https://github.com/nwoodweb/pandas-woodn/commit/98e795469add2868e392220bc057c87152534700).

I think that looks good, thanks - at this point I think the simplest thing would be for you to [suggest changes](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request) on this PR, so then you'll end up as co-committer

In the future, please comment `take` on issues you're working on so the issue is assigned to you - in this case, I'd forgotten that you'd already commented that you were working on this, apologies