Update agent_llamaindex.py

agent_llamaindex.py

@@ -4,7 +4,7 @@ from datetime import date
 from llama_index.agent.openai import OpenAIAgent
 from llama_index.llms.openai import OpenAI
 from llama_index.core.tools import FunctionTool
-from llama_hub.tools.weather import OpenWeatherMapToolSpec
+from llama_index.tools.weather import OpenWeatherMapToolSpec
 
 def today_tool(text: str) -> str:
     """Returns today's date. Use this for any questions related to knowing today's date.