use create in folders class

Author: nanaeaubry

samples/03_org_administrators/move_existing_user_content_to_a_new_user.ipynb

@@ -201,7 +201,7 @@
     "        print(\"Item may have been already assigned to the user.\")\n",
     "\n",
     "for folder in folders:\n",
-    "    gis.content.create_folder(folder['title'], new_userid)\n",
+    "    gis.folders.create(folder['title'], new_userid)\n",
     "    folderitems = olduser.items(folder=folder['title'])\n",
     "    for item in folderitems:\n",
     "        item.reassign_to(new_userid, target_folder=folder['title'])"