singleuser.user.php -> nextcloud

Changed to nextcloud

core/templates/singleuser.user.php

@@ -1,6 +1,6 @@
 <ul>
 	<li class='update'>
-		<?php p($l->t('This ownCloud instance is currently in single user mode.')) ?><br><br>
+		<?php p($l->t('This Nextcloud instance is currently in single user mode.')) ?><br><br>
 		<?php p($l->t('This means only administrators can use the instance.')) ?><br><br>
 		<?php p($l->t('Contact your system administrator if this message persists or appeared unexpectedly.')) ?>
 		<br><br>