Renamed .yaml files to be .yml

[mollybsmith-noaa]

Pull request to change all .yaml files in METdataio to use .yml, ensuring uniformity.

Pull Request Testing

• [ ] Describe testing already performed for these changes:
  

• [ ] Have verified that METdbload still works but I don't really have the capacity to test METreadnc or METreformat

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

• [ ] If possible, test that METreadnc and METreformat are working as expected.

• [ ] Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? -- Change to text of documentation, but no change to documentation structure itself.

• [ ] Do these changes include sufficient testing updates? Yes -- Some test files have extensions changed from .yaml to .yml. If tests pass this should be fine.

• [ ] Will this PR result in changes to the test suite? Yes, see above.

• [ ] Do these changes introduce new SonarQube findings? No
  If yes, please describe:

• [ ] Please complete this pull request review by 5/3/2024.
  

Pull Request Checklist

See the METplus Workflow for details.

• [ ] Add any new Python packages to the METplus Components Python Requirements table.
• [ ] Review the source issue metadata (required labels, projects, and milestone).
• [ ] Complete the PR definition above.
• [ ] Ensure the PR title matches the feature or bugfix branch name.
• [ ] Define the PR metadata, as permissions allow. Select: Reviewer(s) Select: Organization level software support Project or Repository level development cycle Project Select: Milestone as the version that will include these changes
• [ ] After submitting the PR, select the :gear: icon in the Development section of the right hand sidebar. Search for the issue that this PR will close and select it, if it is not already selected.
• [ ] After the PR is approved, merge your changes. If permissions do not allow this, request that the reviewer do the merge.
• [ ] Close the linked issue and delete your feature or bugfix branch from GitHub.

[jprestop]

@mollybsmith-noaa and @fisherhucar There was some discussion of this topic in Slack on .yml vs. .yaml. Minna and I thought the files were to be renamed .yaml and not .yml. Please see the discussion in the METplus Analysis channel. I'll go tag you both there now.

[jprestop]

Actually, I see that @mollybsmith-noaa added some comments, which I hadn't seen previously. It sounds like we're waiting to hear back from others before deciding on anything.

[jprestop]

@fisherhucar No worries. I won't be at the meeting due to LEAD training, but I'm sure you all have will cover it well. I'll check in on the notes to see what I missed.