Fix graph labels for login

EventListener/LoginStatsListener.php

@@ -68,10 +68,10 @@ class LoginStatsListener implements EventSubscriberInterface
 
             $event->setMuninConfig('login', [
                 'graph_title' => 'Authserver logins',
-                'graph_vlabel' => 'Number of logins',
+                'graph_vlabel' => 'Events/${graph_period}',
                 'graph_category' => 'authserver',
                 'graph_period' => 'minute',
-                'total.label' => 'Logins per ${graph_period}',
+                'total.label' => 'Interactive logins',
                 'total.type' => 'COUNTER'
             ]);