Fixed tyop syntax error.

Author: Phil Sturgeon

user_guide/library.html

@@ -73,7 +73,7 @@ <h2>set()</h2>
 	<pre>$this->template->set('foo', $bar);</pre>
 
 	<p><b>Usage</b></p>
-	<pre>$this->template->build('welcome_message', array('message' => 'Hi there!');</pre>
+	<pre>$this->template->build('welcome_message', array('message' => 'Hi there!'));</pre>
 	<br />
 
 	<a name="prepend_metadata"></a>