Updating ListView dnd docs for new api (#3579)

* updating ListView dnd docs for new api

* fixing weird spacing

* removing extraneous comment

* addressing review comments

* address review comments

* Use monopackage imports, and add rc badge

Co-authored-by: Devon Govett <[email protected]>
Co-authored-by: Danni <[email protected]>

Author: 3 people

packages/@react-spectrum/dnd/docs/dnd.mdx

@@ -157,9 +157,8 @@ Below is what our draggable ListView would look like after combining everything
 [React Aria docs](../react-aria/useDraggableCollection.html#drag-data).
 
 ```tsx example export=true render=false
-import {Item, ListView} from '@react-spectrum/list';
+import {Item, ListView, useListData} from '@adobe/react-spectrum';
 import {useDragAndDrop} from '@react-spectrum/dnd';
-import {useListData} from '@react-stately/data';
 
 function DraggableList() {
   let list = useListData({