Refine the volume mount example
Refine the volume mount example

The path here should be absolute, else it would
deem it as volume name.

Also link to release page to contain static binary,
the old link not work, because it is just used to
install docker in os distro, it can not be used
as static binary directly.

Signed-off-by: Kai Qiang Wu(Kennan) <03a9957f0460ce3379f6e452396aa35e108b5af5@cn.ibm.com>

swasd/baleno,swasd/baleno,swasd/baleno