chore(emails): fix test formatting

Author: KilianTrunk

tests/Feature/EmailCoverageTest.php

@@ -101,7 +101,7 @@
         null,
         $this->sender
     );
-    
+
     // The site ID property should exist (may be null in test environment)
     expect(property_exists($mail, 'siteId'))->toBeTrue();
 });