compose.gpu: Fix prerequisites link
compose.gpu: Fix prerequisites link

Signed-off-by: Chris Crone <0bd24f27efbdecb22ed8ee46cb16be12b5608d69@docker.com>

docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io