Internal: Tests: Fix user e-mail to use @example.com

tests/CoreBundle/Controller/AccountControllerTest.php

@@ -26,7 +26,7 @@ class AccountControllerTest extends WebTestCase
 
         $client->submitForm('Update profile', [
             'profile[firstname]' => 'admin firstname',
-            'profile[email]' => 'test@test.com',
+            'profile[email]' => 'test@example.com',
             // 'profile[mail_notify_invitation]' => 1,
         ]);
         $this->assertResponseRedirects('/account/home');