[ci skip] Update codeigniter.com links to https
diff --git a/application/config/smileys.php b/application/config/smileys.php
index 1eeba47..abf9a89 100644
--- a/application/config/smileys.php
+++ b/application/config/smileys.php
@@ -10,7 +10,7 @@
 | :-) and :) use the same image replacement.
 |
 | Please see user guide for more info:
-| http://codeigniter.com/user_guide/helpers/smiley_helper.html
+| https://codeigniter.com/user_guide/helpers/smiley_helper.html
 |
 */
 $smileys = array(