"Move Field Instructions Above Input Box" code not working

I'm trying to use the Developer Docs suggested code for "Move Field Instructions Above Input Box", but can't get it to work on any of my fields. Have tried several field types. Wondering if anyone else has had this problem?

Here's the suggested code:

/* Change the scene_1 to the scene key of your choice, and field_1 to the field key of the field you're working with. */

$(document).on('knack-scene-render.scene_1', function(event, scene) {

$('#kn-input-field_1 > p.kn-instructions').prependTo($('#kn-input-field_1 div.kn-radio'));