Update app.py

app.py

@@ -12,7 +12,7 @@ client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 def respond(message,history):
     messages = [{"role": "system", "content": "You are a friendly chatbot."}]
 
-     if history:
+    if history:
         messages.extend(history)
     messages.append({"role":"user","content":messages})