Merge pull request #80 from geekwright/errata79

Doc block updates

Author: geekwright

src/Module/Admin.php

@@ -23,9 +23,8 @@
  * @category  Xmf\Module\Admin
  * @package   Xmf
  * @author    Richard Griffith <[email protected]>
- * @copyright 2011-2018 XOOPS Project (https://xoops.org)
- * @license   GNU GPL 2 or later (http://www.gnu.org/licenses/gpl-2.0.html)
- * @link      https://xoops.org
+ * @copyright 2011-2021 XOOPS Project (https://xoops.org)
+ * @license   GNU GPL 2 or later (https://www.gnu.org/licenses/gpl-2.0.html)
  */
 class Admin
 {
@@ -236,13 +235,13 @@ public function displayIndex()
      *
      * @param string $menu menu key (script name, i.e. index.php)
      *
-     * @return bool|mixed|string
+     * @return string
      */
     public function renderNavigation($menu = '')
     {
         return static::$ModuleAdmin->addNavigation($menu);
     }
-    
+
     /**
      * Display the navigation menu
      *