Updates release notes for v11.1 for function removal.

[DanielAdriaansen]

Closes #2624.

Expected Differences

• Do these changes introduce new tools, command line arguments, or configuration file options? [Yes or No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [Yes or No]
  
  If yes, please describe:
  

Pull Request Testing

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• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes or No]

• Do these changes include sufficient testing updates? [Yes or No]

• Will this PR result in changes to the test suite? [Yes or No]
  
  If yes, describe the new output and/or changes to the existing output:
  

• Please complete this pull request review by [Fill in date].
  

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[DanielAdriaansen]

I am trying to view the docs here: https://met.readthedocs.io/en/hotfix_update_v11.1_release_notes, but it doesn't seem to be working.

[jprestop]

@DanielAdriaansen Only branches that begin with the following prefixes have documentation generated automatically:
- develop
- develop-ref
- feature_*
- main_*
- bugfix_*

as listed in the GitHub Actions workflow file https://github.com/dtcenter/MET/blob/main_v11.0/.github/workflows/documentation.yml

Since this branch begins with "hotfix" the documentation was not automatically generated. However, the PR generates a build of documentation, which you can see here:
https://met--2630.org.readthedocs.build/en/2630/Users_Guide/release-notes.html

[jprestop]

@DanielAdriaansen I added some suggestions for indention to align the code block with the bulleted list.

[DanielAdriaansen]

@DanielAdriaansen I added some suggestions for indention to align the code block with the bulleted list.

Thanks @jprestop! I am happy with things now. Feel free to approve based on how the docs look here:
https://met--2630.org.readthedocs.build/en/2630/Users_Guide/release-notes.html#met-version-11-1-0-upgrade-instructions

And then merge. Appreciate your help!

[jprestop]

Great @DanielAdriaansen! It looks good to me too. Thanks for your work on this task! I approve this request.