Removed broken link from NDFrame#interpolate docs.
The link at https://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html pointing to the SciPy Interpolation tutorial is broken. An alternative tutorial was not found in the new documentation.

- [ ] 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).
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Hello @bicarlsen! 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 2022-02-15 07:47:49 UTC /precommit https://github.com/pandas-dev/pandas/runs/5191233428?check_suite_focus=true

is failing i think you need to remove a line Thanks @bicarlsen 