Bugfix: fix model type typo

[MooooCat]

gpt-3.5-turbo-0613 -> gpt-3.5-turbo

because:

NotFoundError: Error code: 404 - {'error': {'message': 'The model `Gpt-3.5-turbo-0613` does not exist', 'type': 'invalid_request_error', 'param': None, 'code': 'model_not_found'}}

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.87%. Comparing base (ec31560) to head (5898238).

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #144   +/-   ##
=======================================
  Coverage   79.87%   79.87%           
=======================================
  Files          69       69           
  Lines        3250     3250           
=======================================
  Hits         2596     2596           
  Misses        654      654           

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