gh-122399: change webbrowser.rst to better describe the contents of controller object (#122407)

Co-authored-by: Adam Turner <[email protected]>

Author: jordibc

Doc/library/webbrowser.rst

@@ -226,8 +226,8 @@ 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:`~controller.name` attribute,
+and the following three methods which parallel module-level convenience functions:
 
 
 .. attribute:: controller.name