Add test for bulk delete action in README.md

Author: CodeWithDennis

README.md

@@ -55,6 +55,9 @@ This package generates comprehensive PEST tests for your Filament resources. Her
 - **CanSortColumnTest** - Tests that sortable columns work correctly
 - **CanPaginateRecordsTest** - Tests that pagination works correctly
 
+### Bulk Action Tests
+- **CanBulkDeleteRecordsTest** - Tests that bulk delete action works correctly
+
 ### Setup Tests
 - **BeforeEach** - Sets up common test configuration and data