[ci skip] Update codeigniter.com links to https
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 4d8e98e..db708e8 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -31,7 +31,7 @@
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
* @copyright Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
- * @link http://codeigniter.com
+ * @link https://codeigniter.com
* @since Version 1.0.0
* @filesource
*/
@@ -44,7 +44,7 @@
* @subpackage Helpers
* @category Helpers
* @author EllisLab Dev Team
- * @link http://codeigniter.com/user_guide/helpers/captcha_helper.html
+ * @link https://codeigniter.com/user_guide/helpers/captcha_helper.html
*/
// ------------------------------------------------------------------------