Change references to affine example.

Change references to affine example.

Because of the merge of demos and examples all references to all demos
have to be updated. This is the update for the affine example.

Change-Id: I83f24010162a73e11786587365c6f10b51d4bf4b
Reviewed-on: http://codereview.qt.nokia.com/774
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: David Boddie