To increase accessibility for the documentation, provide altenative descriptions for the images. Pick-to: 6.9 6.8 Fixes: QTBUG-135116 Change-Id: Id2d97251af9af0d4222f0dc15aa5b8e266ca36f4 Reviewed-by: Safiyyah Moosa <safiyyah.moosa@qt.io> Reviewed-by: Andreas Eliasson <andreas.eliasson@qt.io>