[ci skip] Update codeigniter.com links to https
diff --git a/system/language/english/unit_test_lang.php b/system/language/english/unit_test_lang.php
index b9b53e7..d9c09f9 100644
--- a/system/language/english/unit_test_lang.php
+++ b/system/language/english/unit_test_lang.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
*/