Update app.py

app.py

@@ -59,7 +59,7 @@ def stream_chat(message: str, history: list, temperature: float, context_window:
     for prompt, answer in history:
         conversation.extend([
             {"role": "user", "content": prompt}, 
-            {"role": "assistant", "content": answer})
+            {"role": "assistant", "content": answer},
         ])
     conversation.append({"role": "user", "content": message})