Update tool_config.json

tool_config.json

@@ -1,5 +1,5 @@
 {
-  "description": "This is a tool that downloads a file from a `url`. It takes the `url` as input, and returns the text contained in the file.",
-  "name": "text_downloader",
-  "tool_class": "text_download.TextDownloadTool"
+  "description": "This is a tool to send push messages.",
+  "name": "push_notification",
+  "tool_class": "push_notification.PushNotificationTool"
 }