DOC: Fix indendation in docstring sort_values  'by' parameter 
- [ ] closes #xxxx (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).
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Current version looks like:
```
Parameters
----------
        by : str or list of str
            Name or list of names to sort by.

            - if `axis` is 0 or `'index'` then `by` may contain index
              levels and/or column labels.
            - if `axis` is 1 or `'columns'` then `by` may contain column
              levels and/or index labels.
axis : {0 or 'index', 1 or 'columns'}, default 0
     Axis to be sorted.
```


How does this render in the docs?

IMO it looks fine currently? https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.sort_values.html > How does this render in the docs?

Indeed, this look good in the sphinx rendered version. But when I checked the text-version (inside notebook or ipython), it looks like:

![image](https://user-images.githubusercontent.com/754862/203264442-0938b93e-ebff-4986-ad4a-a75a1baae680.png)

this PR fixes the latter.
 > this PR fixes the latter.

Ah okay. Could you double check the sphinx rendered version looks okay too (screenshot of a local rendered doc is fine)? Good point, I checked and seems ok
![image](https://user-images.githubusercontent.com/754862/203976463-89ce195a-46c3-45b3-8234-50e8fa6244cd.png)
 Thanks @stijnvanhoey 