Technologic Systems has rebranded as embeddedTS with the current
domain eventually going offline. Update web/doc URLs to correct
resource locations.

Link: https://lore.kernel.org/all/20220329201229.16279-1-kris@embeddedTS.comSigned-off-by: Kris Bahnsen <kris@embeddedTS.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>