admin: remove obsolet header => true tag + php code fix

src/Bundle/ChillThirdPartyBundle/Controller/AdminController.php

@@ -17,7 +17,7 @@ use Symfony\Component\Routing\Annotation\Route;
 class AdminController extends AbstractController
 {
     /**
-     * ThirdParty admin
+     * ThirdParty admin.
      *
      * @Route("/{_locale}/admin/thirdparty", name="chill_thirdparty_admin_index")
      */
@@ -25,5 +25,4 @@ class AdminController extends AbstractController
     {
         return $this->render('ChillThirdPartyBundle:Admin:index.html.twig');
     }
-
-}
+}

src/Bundle/ChillThirdPartyBundle/Menu/AdminMenuBuilder.php

@@ -37,7 +37,7 @@ class AdminMenuBuilder implements LocalMenuBuilderInterface
             'route' => 'chill_thirdparty_admin_index',
         ])
             ->setAttribute('class', 'list-group-item-header')
-            ->setExtras(['order' => 3000, 'header' => true]);
+            ->setExtras(['order' => 3000]);
 
         $menu->addChild('Third party category', [
             'route' => 'chill_crud_thirdparty_thirdparty-category_index',