Update app.py

app.py

@@ -16,7 +16,7 @@ def respond(
     temperature,
     top_p,
 ):
-    system_message = os.getenv('system_message_palindrome'))
+    system_message = os.getenv('system_message_palindrome')
     messages = [{"role": "system", "content": system_message}]
 
     for val in history: