Update eval_instruct.py

Author: neginraoof

eval/chat_benchmarks/AMC23/eval_instruct.py

@@ -29,7 +29,7 @@ def __init__(
         data_file: str = "eval/chat_benchmarks/AMC23/data/amc23.json",
         debug: bool = False,
         seed: List[int] = [0, 1234, 1234, 1234],
-        max_tokens: int = 32768,
+        max_tokens: Optional[int] = 32768,
         logger: Optional[logging.Logger] = None,
         system_instruction: Optional[str] = None,
     ):