Update app.py

app.py

@@ -136,7 +136,7 @@ def ref_context(request: ModelRequest) -> str:
     last_query = request.state["messages"][-1].text
     ref_content = refs_vector_db.as_retriever(k=10)
 
-    system_message = 
+    system_message = (
         """Your job is to use relevant links and email addresses to
         direct users to in order to reach and contact the WEAI team. Do not use links 
         or contacts not provided in the context.If you don't know