fix syntax error

tools.py

@@ -75,7 +75,7 @@ def _youtube_rag(prompt: str):
     chat_model = ChatOpenAI(model_name="gpt-4-1106-preview")
     chain = load_qa_chain(llm=chat_model, chain_type="stuff")
     answer = chain.run(input_documents=docs, question=query)
-return answer
+    return answer
 
 def generate_image(prompt: str):
     image_name = _generate_image(prompt)