update loaing

docs/md/REVIEWS_API_INTEGRATION_SUMMARY.md

@@ -257,7 +257,7 @@ int stars = apiRatingToStars(0.8); // 4
 - Added date formatting function (`_formatDate`)
 
 **States**:
-1. **Loading**: Shows CircularProgressIndicator
+1. **Loading**: Shows CustomLoadingIndicator
 2. **Error**: Shows error icon and message
 3. **Empty**: Shows "Chưa có đánh giá nào" with call-to-action
 4. **Data**: Shows rating overview and review list
@@ -553,7 +553,7 @@ Widget build(BuildContext context, WidgetRef ref) {
         },
       );
     },
-    loading: () => CircularProgressIndicator(),
+    loading: () => const CustomLoadingIndicator(),
     error: (error, stack) => Text('Error: $error'),
   );
 }