monitoring/CSS: Fix action-table class in the service groups overview

refs #5543

modules/monitoring/application/views/scripts/list/servicegroups.phtml

@@ -14,7 +14,7 @@ if (! $this->compact): ?>
     <p><?= $this->translate('No service groups found matching the filter.') ?></p>
 </div>
 <?php return; endif ?>
-<table class="action-tabline listing-table" data-base-target="_next">
+<table class="action-table listing-table" data-base-target="_next">
 <thead>
     <th></th>
     <th><?= $this->translate('Service Group') ?></th>