VidorHDL tutorial is missing context [MKC-550]

[matthijskooijman]

On the foundations page (https://www.arduino.cc/en/Tutorial/Foundations) a "VidorHDL" tutorial is listed: https://www.arduino.cc/en/Tutorial/VidorHDL

Googling, I suspect this page is about programming the Arduino MKR Vidor board, but these webpages themselves do not make this really clear. I usually recommend the Foundations page to new Arduino users as a good set of tutorials to just work through. As it is now, I think this advice will leave these new users heavily confused before they realize that this tutorial is specific to one particular board.

Perhaps it would be good to add a bit of context to both pages, to position this tutorial in the Arduino hardware landscape?