Fix a little white spacing.

core/domain_settings/app_config.php

@@ -140,4 +140,5 @@
 		$apps[$x]['db'][$y]['fields'][$z]['name'] = "domain_setting_description";
 		$apps[$x]['db'][$y]['fields'][$z]['type'] = "text";
 		$apps[$x]['db'][$y]['fields'][$z]['description']['en-us'] = "";
-?>
+
+?>