fixed doc error with $this->uri->total_rsegments()
diff --git a/user_guide/libraries/uri.html b/user_guide/libraries/uri.html
index 923b38e..27e6f0d 100644
--- a/user_guide/libraries/uri.html
+++ b/user_guide/libraries/uri.html
@@ -206,7 +206,7 @@
<p>Returns the total number of segments.</p>
-<h2>$this->uri->total_rsegments(<var>n</var>)</h2>
+<h2>$this->uri->total_rsegments()</h2>
<p>This function is identical to the previous one, except that it returns the total number of segments in your
re-routed URI in the event you are using CodeIgniter's <a href="../general/routing.html">URI Routing</a> feature.</p>