(DOCSP-22424): fix collection name in example (#203)

Author: jeff-allen-mongo

source/crud/insert.txt

@@ -60,7 +60,7 @@ an ObjectId value to the new document. See
 
    .. code-block:: javascript
 
-      db.inventory.find( { title: "The Favourite" } )
+      db.movies.find( { title: "The Favourite" } )
 
    To ensure you return the document you inserted, you can instead
    query by ``_id``.