Updated readme tracking image tag accordingly
Updated readme tracking image tag accordingly

OfficeDev/PnP-Transformation,bburramukku/PnP-Transformation,bburramukku/PnP-Transformation,bburramukku/PnP-Transformation,OfficeDev/PnP-Transformation,jansenbe/PnP-Transformation,jansenbe/PnP-Transformation,OfficeDev/PnP-Transformation,jansenbe/PnP-Transformation