Update de.php

Typo in Username

Author: Robin Groppe

web/inc/i18n/de.php

@@ -278,7 +278,7 @@
     'Release'  => 'Release',
     'Architecture'  => 'Architektur',
     'Object'  => 'Objekt',
-    'Username'  => 'Bentzername',
+    'Username'  => 'Benutzername',
     'Password'  => 'Passwort',
     'Email'  => 'E-Mail',
     'Package'  => 'Paket',