🐛 fix nargs + or *

[joerunde]

Thank you @tjohnson31415 for the guidance

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 57.18%. Comparing base (5852586) to head (158f02a).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/vllm_tgis_adapter/tgis_utils/args.py	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #140      +/-   ##
==========================================
- Coverage   57.26%   57.18%   -0.08%     
==========================================
  Files          25       25              
  Lines        1542     1544       +2     
  Branches      256      257       +1     
==========================================
  Hits          883      883              
- Misses        581      582       +1     
- Partials       78       79       +1     

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[njhill]

Thanks @joerunde