webbrowser.rst: better describe the contents of controller object

This is a minor change that addresses python#122399

It just mentions that the controller object has a `name` attribute too, before mentioning it with the other methods.

Author: jordibc

Doc/library/webbrowser.rst

@@ -210,8 +210,8 @@ Here are some simple examples::
 Browser Controller Objects
 --------------------------
 
-Browser controllers provide these methods which parallel three of the
-module-level convenience functions:
+Browser controllers provide the :attr:`name` attribute, and these three methods
+which parallel module-level convenience functions:
 
 
 .. attribute:: controller.name