Publish 2fa backup codes activities to the right stream

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

apps/twofactor_backupcodes/lib/Service/BackupCodeStorage.php

@@ -103,7 +103,7 @@ class BackupCodeStorage {
 	private function publishEvent(IUser $user, $event) {
 		$activity = $this->activityManager->generateEvent();
 		$activity->setApp('twofactor_backupcodes')
-			->setType('twofactor')
+			->setType('security')
 			->setAuthor($user->getUID())
 			->setAffectedUser($user->getUID())
 			->setSubject($event);