boot/uboot: update link to the U-Boot docs
The denx.de/wiki/U-Boot link now redirects to docs.u-boot.org/en/latest
Replace the link to the new location for the U-Boot documentation
Signed-off-by: Bryan Brattlof <bb@ti.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 164d9f0546372eb076506eebc8f88c6c4a544a36)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Bryan Brattlof