CLI: Fix missing max_tokens arg of chat_completions.create (#317)

Author: jhen0409

openai/cli.py

@@ -126,7 +126,7 @@ def create(cls, args):
             messages=messages,
             # Optional
             n=args.n,
-            max_tokens=100,
+            max_tokens=args.max_tokens,
             temperature=args.temperature,
             top_p=args.top_p,
             stop=args.stop,