Update app.py

app.py

@@ -1587,6 +1587,7 @@ def create_chat_demo_rag(title=None, description=None):
     temperature = TEMPERATURE
     frequence_penalty = FREQUENCE_PENALTY
     presence_penalty = PRESENCE_PENALTY
+    description = description or RAG_DESCRIPTION
 
     # with gr.Blocks(title="RAG") as rag_demo:
     additional_inputs = [