fix tool

community_tools.py

@@ -15,14 +15,14 @@ arxiv_tools = [Tool.from_langchain(tool) for tool in load_tools(["arxiv"])]
 community_tools = [google_map_tool, wikipedia_tool, *arxiv_tools]
 
 @tool
-def get_youtube_transcript_from_url(video_url: str = None):
+def get_youtube_transcript_from_url(video_url: str = None)->str:
     """
     Get the transcript of a YouTube video
     Args:
         video_url: The URL of the YouTube video
     Returns:
-        The transcript of the YouTube video
-    """
+        The transcript of the YouTube video as a string
+    """ 
     youtube_loader = YoutubeLoader(video_url=video_url)
     docs = youtube_loader.load()
     transcript = docs[0].page_content