Update tools.py

tools.py

@@ -60,6 +60,6 @@ rag_format = '{{"prompt": "prompt"}}'
 rag_tool = Tool.from_function(
     func=rag,
     name="RAG",
-    description=f"Useful for retrieving contextual information about the PDF to answer user questions. Input should be a single string strictly in the following JSON format: {generate_image_format}",
+    description=f"Useful for retrieving contextual information about the PDF to answer user questions. Input should be a single string strictly in the following JSON format: {rag_format}",
     return_direct=True,
 )