fixed example for register_object

docs/programmers.sgml

@@ -2004,7 +2004,7 @@ When reloading the page you will notice that both dates differ. One is "dynamic"
 <?php
 // the object
 
-class My_Object() {
+class My_Object {
 	function meth1($params, &$smarty_obj) {
 		return "this is my meth1";
 	}