fix forcefield name

[CalCraven]

Fix typo in package name in pyproject.toml

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.32%. Comparing base (65eebd5) to head (5739745).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   89.32%   89.32%           
=======================================
  Files          12       12           
  Lines        1358     1358           
=======================================
  Hits         1213     1213           
  Misses        145      145           

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