fixing some letter casing issues

[danielskatz]

What the pull request does

Explain in a few words what the pull request does.

Type of change

Please indicate the relevant option(s)

• [ ] :bug: Bug fix (non-breaking change which fixes an issue)
• [ ] :sparkle: New feature (non-breaking change which adds functionality)
• [ ] :boom: Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] :book: This change requires a documentation update

Checklist

• [ ] The changes are documented
  • [ ] The docstrings of the different functions describe the arguments, purpose, and behavior
  • [ ] There are examples in the documentation website
• [ ] The changes are tested
• [ ] The changes do not modify the behavior of the previously existing functions
  • If they do, please explain why and how in the introduction paragraph
• [ ] For new contributors - my name and information are added to .zenodo.json
• [ ] The Project.toml field version has been updated
  • Change the last number for a v0.0.x series release, a bug fix, or a performance improvement
  • Change the middle number for additional features that do not break the current test suite (unless you fix a bug in the test suite)
  • Change the first number for changes that break the current test suite