fix typo in router class
diff --git a/system/core/Router.php b/system/core/Router.php
index f91d3f6..0510005 100644
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -105,7 +105,7 @@
 	/**
 	 * Enable query strings flag
 	 *
-	 * Determines wether to use GET parameters or segment URIs
+	 * Determines whether to use GET parameters or segment URIs
 	 *
 	 * @var	bool
 	 */