fix response_formt

evaluator.py

@@ -105,7 +105,7 @@ def gpt_evaluator(payload, fewshot, response_format):
             {"role": "system", "content": fewshot},
             {"role": "user", "content": payload},
         ],
-        response_format={type: "json_object"})
+        response_format={"type": "json_object"})
     json_str = response.choices[0].message.content
     data = json.loads(json_str)
     print(data)