fix typo in comments
diff --git a/system/core/Security.php b/system/core/Security.php
index 8b3149c..7c18c74 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -75,7 +75,7 @@
 	/**
 	 * Character set
 	 *
-	 * Will be overriden by the constructor.
+	 * Will be overridden by the constructor.
 	 *
 	 * @var	string
 	 */