fix

core/lib/Drupal/Core/Entity/EntityDisplayRepositoryInterface.php

@@ -164,13 +164,13 @@ public function getViewDisplay($entity_type, $bundle, $view_mode = self::DEFAULT
    * @code
    * \Drupal::service('entity_display.repository')
    *   ->getFormDisplay('node', 'article', 'default')
-   *   ->setComponent('body', array(
+   *   ->setComponent('body', [
    *     'type' => 'text_textarea_with_summary',
    *     'weight' => 1,
-   *   ))
-   *   ->setComponent('field_image', array(
+   *   ])
+   *   ->setComponent('field_image', [
    *     'region' => 'hidden',
-   *   ))
+   *   ])
    *   ->save();
    * @endcode
    *

core/modules/field/tests/modules/field_test/field_test.module

@@ -50,7 +50,7 @@
  *
  *   // make sure hook_field_storage_config_create() is invoked correctly
  *   assertEquals(1, count($mem['field_test_field_storage_config_create']));
- *   assertEquals(array($field), $mem['field_test_field_storage_config_create'][0]);
+ *   assertEquals([$field], $mem['field_test_field_storage_config_create'][0]);
  * @endcode
  *
  * @param $key