Pluralising entity names in "See all" menu

src/Plugin/Derivative/SeeAllActorsMenuLink.php

@@ -45,7 +45,7 @@ class SeeAllActorsMenuLink extends DeriverBase implements ContainerDeriverInterf
     $actorTypes = $this->entityTypeManager->getStorage('oc_actor_type')->loadMultiple();
     foreach ($actorTypes as $id => $actorType) {
       $links[$id] = [
-        'title' => $actorType->label(),
+        'title' => \Drupal\opencase\Pluraliser::pluralise($actorType->label()),
         'route_name' => "view.actors.page_1",
         'route_parameters' => ['type' => $actorType->id()]
       ] + $base_plugin_definition;