Update to Drupal 8.1.5. For more information, see https://www.drupal.org/project/drupal/releases/8.1.5

core/lib/Drupal/Core/Extension/ModuleHandlerInterface.php

@@ -214,7 +214,7 @@ interface ModuleHandlerInterface {
    *   The name of the module (without the .module extension).
    * @param string $hook
    *   The name of the hook to invoke.
-   * @param ...
+   * @param array $args
    *   Arguments to pass to the hook implementation.
    *
    * @return mixed

core/lib/Drupal/Core/Extension/module.api.php

@@ -72,6 +72,8 @@ use Drupal\Core\Utility\UpdateException;
  * frequently called should be left in the main module file so that they are
  * always available.
  *
+ * See system_hook_info() for all hook groups defined by Drupal core.
+ *
  * @return
  *   An associative array whose keys are hook names and whose values are an
  *   associative array containing:
@@ -79,8 +81,6 @@ use Drupal\Core\Utility\UpdateException;
  *     system will determine whether a file with the name $module.$group.inc
  *     exists, and automatically load it when required.
  *
- * See system_hook_info() for all hook groups defined by Drupal core.
- *
  * @see hook_hook_info_alter()
  */
 function hook_hook_info() {