DD4L: Add direct download links back (#15313)
DD4L: Add direct download links back (#15313)

Not having direct download linkks in the installation instruction may be
inconvenient for users who want to update desktop, or install it on a
distro that is not officially supported. So add those back.

Signed-off-by: Piotr Stankiewicz <d275fa776169080a88c79a7daf835ccb90205caf@docker.com>
docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io