Updating output attribute in place order mutation output object (#6753)

* Updating place orderoutput attribute

* Adding whitespace

* adding whitespace after order_number

* Add highlighting

Co-authored-by: Kevin Harper <keharper@users.noreply.github.com>

Author: VinothKumar361

src/guides/v2.3/graphql/mutations/place-order.md

@@ -73,8 +73,8 @@ Attribute |  Data Type | Description
 
 Attribute |  Data Type | Description
 --- | --- | ---
-`order_id` String | The unique ID that identifies the order
-`order_number` String | The unique ID that identifies the order
+`order_id` | String! | Deprecated. Use `order_number` instead. The unique ID that identifies the order
+`order_number` | String | The unique ID that identifies the order
 
 ## Errors