DX: rector in docs directory

docs/source/_static/code/exports/CountPerson.php

@@ -50,18 +50,9 @@ class CountPerson implements ExportInterface
     public function getLabels($key, array $values, $data)
     {
         // the Closure which will be executed by the formatter.
-        return function ($value) {
-            switch ($value) {
-                case '_header':
-                    // we have to process specifically the '_header' string,
-                    // which will be used by the formatter to show a column title
-                    return $this->getTitle();
-
-                default:
-                    // for all value, we do not process them and return them
-                    // immediatly
-                    return $value;
-            }
+        return fn($value) => match ($value) {
+            '_header' => $this->getTitle(),
+            default => $value,
         };
     }
 

docs/source/development/user-interface/widgets/ChillMainConfiguration.php

@@ -23,19 +23,12 @@ class ChillMainConfiguration implements ConfigurationInterface
 {
     use AddWidgetConfigurationTrait;
 
-    /**
-     * @var ContainerBuilder
-     */
-    private $containerBuilder;
-
     public function __construct(
         array $widgetFactories,
-        ContainerBuilder $containerBuilder
+        private ContainerBuilder $containerBuilder
     ) {
         // we register here widget factories (see below)
         $this->setWidgetFactories($widgetFactories);
-        // we will need the container builder later...
-        $this->containerBuilder = $containerBuilder;
     }
 
     public function getConfigTreeBuilder()