message: Update SelectionControlGroup docs to use Freestyle::Usage
diff: @@ -5,6 +5,7 @@ import { action } from '@ember/object';
  export default class extends Component {
  @tracked selectedItemCount = 0;
  @tracked isSelected = false;
  + @tracked mode = "view";
  @action setSelectedItemCount(val) {
  val = Number(val);
  