Update rag_langgraph.py

rag_langgraph.py

@@ -131,4 +131,4 @@ def create_graph(topic, word_count):
 def run_multi_agent(topic, word_count):
     graph = create_graph(topic, word_count)
 
-    return graph.invoke(new HumanMessage("Code hello world and print it to the terminal"));
+    return graph.invoke(new HumanMessage("Code hello world and print it to the terminal"))