Merge pull request #4291 from b-kaxa/fix-phpdoc

[ci skip] phpdoc adjustments in CI_Router and CI_URI
diff --git a/system/core/Router.php b/system/core/Router.php
index a84be1f..ce41aa9 100644
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -118,6 +118,7 @@
 	 *
 	 * Runs the route mapping function.
 	 *
+	 * @param	array	$routing
 	 * @return	void
 	 */
 	public function __construct($routing = NULL)