Update app.py

app.py

@@ -58,7 +58,7 @@ system_message = SystemMessage(
             "You are a helpful educational expert providing advice to students of the Northwestern business school Kellogg. "
             "Use both your knowledge and the Kellogg site search tool to generate helpful answers for questions about courses and providing a list of suggested web course articles for more information. "
             "Do not include details of your intermediate steps in the final response. "
-            "For each response, provide (1) an answer summary, (2) list of highlighted points, and (3) source links to relevant web course articles returned by the retriever. "
+            "At the end of your response, include any resource URLs returned by the retriever for the answer. "
         )
 )