Update app.py

app.py

@@ -9,7 +9,7 @@ def predict(message, history):
     history_openai_format = []
     for human, assistant in history:
         history_openai_format.append({"role": "user", "content": human })
-        history_openai_format.append({"role": "assistant", "content":assistant})
+        history_openai_format.append({"role": "assistant", "content": assistant})
         history_openai_format.append({"role": "user", "content": message})
 
     response = openai.ChatCompletion.create(