Fix the quicknanobrowser example's import version

Change-Id: Ib1d855bab6c764c0341b39b374b00425645903ff
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

examples/webengine/quicknanobrowser/quickwindow.qml

@@ -39,7 +39,7 @@
 ****************************************************************************/
 
 import QtQuick 2.1
-import QtWebEngine 1.0
+import QtWebEngine 0.9
 import QtQuick.Controls 1.0
 import QtQuick.Controls.Styles 1.0
 import QtQuick.Layouts 1.0