Update rag_langgraph.py

rag_langgraph.py

@@ -130,10 +130,4 @@ def run_multi_agent(topic, word_count):
             HumanMessage(content=topic)
         ]
     })
-    print("##########")
-    print(result['messages'][1].content)
-    print("##########")
-    print(result['messages'][2].content)
-    print("##########")
-    print(result['messages'][3].content)
-    return result['messages'][result['messages'].len() - 1].content
+    return result['messages'][-1].content