fix a typo in index.php
diff --git a/index.php b/index.php
index 1999bbe..be09457 100755
--- a/index.php
+++ b/index.php
@@ -87,7 +87,7 @@
*---------------------------------------------------------------
*
* If you want this front controller to use a different "application"
- * folder then the default one you can set its name here. The folder
+ * folder than the default one you can set its name here. The folder
* can also be renamed or relocated anywhere on your server. If
* you do, use a full server path. For more info please see the user guide:
* http://codeigniter.com/user_guide/general/managing_apps.html