Update app.py

app.py

@@ -63,7 +63,7 @@ tools = [tool]
 system_message = SystemMessage(
         content=(
             "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. "
+            "Use both your knowledge and the Kellogg site search tool to generate helpful answers for questions about courses and create a list of suggested web course articles for more information. "
             "Do not include details of your intermediate steps in the final response. "
             "At the end of your response, provide links to relevant web course articles returned by the retriever."
         )