remove register for dart link because this no longer exists

[hkershaw-brown]

remove register for dart link because this no longer exists:

• README.md
• models/wrf/tutorial/README.rst

Added Apache license badge to README.md

Description:

Please provide a summary of the change and include any relevant motivation and context.

Fixes issue

Fixes #616 if you ignore the header in every file.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Documentation changes needed?

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.

Tests

Built docs with sphinx locally.
Previewed README.md with macdown.

Checklist for merging

• Updated changelog entry
• Documentation updated
• Update conf.py

Checklist for release

• Merge into main
• Create release from the main branch with appropriate tag
• Delete feature-branch

Testing Datasets

• Dataset needed for testing available upon request
• Dataset download instructions included
• No dataset needed

[ann-norcio]

Documentation changes look good

[mjs2369]

Everything looks good. Approved