Update license reference

[emmanuel-ferdman]

Description

Commit 22ba8f1 renamed the license file. This PR adjusts source to changes.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• 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)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works:
  • Negative tests
  • Positive tests
  • Shell tests

[paulcadman]

Thanks for the contribution @emmanuel-ferdman