Update to Drupal 8.1.0. For more information, see https://www.drupal.org/drupal-8.1.0-release-notes

core/lib/Drupal/Core/PrivateKey.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\PrivateKey.
- */
-
 namespace Drupal\Core;
 
 use Drupal\Core\State\StateInterface;
@@ -51,7 +46,7 @@ class PrivateKey {
    * Sets the private key.
    *
    * @param string $key
-   *  The private key to set.
+   *   The private key to set.
    */
   public function set($key) {
     return $this->state->set('system.private_key', $key);