Fix examples of shaded_fraction1d

[echedey-ls]

• Solves issue raised at mailing list: https://groups.google.com/g/pvlib-python/c/Yl5tL3HKtMU
• I am familiar with the contributing guidelines
• Adds description and name entries in the appropriate "what's new" file in docs/sphinx/source/whatsnew for all changes. Includes link to the GitHub Issue with :issue:`num` or this Pull Request with :pull:`num`. Includes contributor name and/or GitHub username (link with :ghuser:`user`).
• Pull request is nearly complete and ready for detailed review.
• Maintainer: Appropriate GitHub Labels (including remote-data) and Milestone are assigned to the Pull Request and linked Issue.

I forgot to update the outputs after doing changes to the inputs...

Docs link: https://pvlib-python--2215.org.readthedocs.build/en/2215/reference/generated/pvlib.shading.shaded_fraction1d.html

Do you think we need an whatsnew entry for this?

[kandersolar]

Thanks @echedey-ls! I think a brief whatsnew entry is appropriate.

[echedey-ls]

Done!

[kandersolar]

Thanks @echedey-ls!