Quick: Update documentation of TapHandler to reflect renamed enum

PointerDevice.GenericPointer was the enum value in Qt5, but in Qt6 this
changed to PointerDevice.Generic

Pick-to: 6.2 6.5
Change-Id: Ic5e4a5fe5fd91f7478d00e0d2c643b99eaa7ab14
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

src/quick/handlers/qquickpointerdevicehandler.cpp

@@ -149,7 +149,7 @@ void QQuickPointerDeviceHandler::setAcceptedDevices(QPointingDevice::DeviceTypes
     Rectangle {
        id: rect
        TapHandler {
-           acceptedPointerTypes: PointerDevice.GenericPointer | PointerDevice.Finger | PointerDevice.Pen
+           acceptedPointerTypes: PointerDevice.Generic | PointerDevice.Finger | PointerDevice.Pen
            onTapped: console.log("clicked")
        }
        TapHandler {