updated api preview dummy record date field layout

ui/src/utils/CommonHelper.js

@@ -771,8 +771,8 @@ export default class CommonHelper {
             "id": "RECORD_ID",
             "collectionId": collection?.id,
             "collectionName": collection?.name,
-            "created": "2022-01-01 01:00:00Z",
-            "updated": "2022-01-01 23:59:59Z",
+            "created": "2022-01-01 01:00:00.123Z",
+            "updated": "2022-01-01 23:59:59.456Z",
         };
 
         if (collection?.isAuth) {