Correct the name of the license

[aerorahul]

Description
PyPI rejected due to incorrect classifier.
This PR corrects it.

Type of change

• 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

How Has This Been Tested?

• pynorms
• pytests

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes need updates to the documentation. I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing tests pass with my changes
• Any dependent changes have been merged and published

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.91%. Comparing base (58bfcf0) to head (e92a841).
Report is 22 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #10   +/-   ##
========================================
  Coverage    48.91%   48.91%           
========================================
  Files           15       15           
  Lines         1429     1429           
  Branches       305      305           
========================================
  Hits           699      699           
  Misses         676      676           
  Partials        54       54           

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