update url

Author: nanaeaubry

guide/03-the-gis/accessing-and-managing-groups.ipynb

@@ -28,7 +28,7 @@
    "source": [
     "<a id=\"searching-for-groups\"></a>\n",
     "## Searching for groups\n",
-    "You can search for groups by using the `search()` method of `GroupManager` object. The `search()` method accepts standard [ArcGIS REST API queries](http://resources.arcgis.com/en/help/arcgis-rest-api/#/Search_reference/02r3000000mn000000/). To illustrate this better, let us connect to ArcGIS Online anonymously and search for public groups that have the word 'water' in the title."
+    "You can search for groups by using the `search()` method of `GroupManager` object. The `search()` method accepts standard [ArcGIS REST API queries](https://developers.arcgis.com/rest/users-groups-and-items/search-reference/). To illustrate this better, let us connect to ArcGIS Online anonymously and search for public groups that have the word 'water' in the title."
    ]
   },
   {