Fix mailing address in README.

Task-number: QTBUG-32390
Change-Id: Ia3a45897b0b7a6bb2434297b21c45bf2dbdda0a5
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

README

@@ -11,7 +11,7 @@ https://blog.qt.digia.com/blog/2011/08/26/toplevel-windows-and-menus-with-qt-qui
 
 HELP
 
-If you have problems or questions, feel free to ask on the QML mailing list at qt-qml@qt.nokia.com
+If you have problems or questions, feel free to ask on the Qt mailing list at interest@qt-project.org
 or alternatively the Qt Developer Network: http://qt-project.org/forums/viewforum/12/
 You can also contact the maintainer at: jens.bache-wiig (at) digia (dot) com