HDMI Wireless Link is just marketing terminology that some companies have used to define the same Wireless HDMI technology. So it's essentially the same thing as a Wireless HDMI transmitter or a Wireless HDMI Extender. Now that we have that straightened out I'll highlight the best HDMI Wireless Link I've seen on the market:
This option by Phillips works the same as the other technology as I've mentioned before. If you click the above link Amazon has a very informative video on how the technology works in the room.