Update the documented location of the hooks
Update the documented location of the hooks

We moved the hooks from /usr/lib/docker/hooks.d to
/usr/libexec/oci/hooks.d during the Fedora package review, so we need to
catch the docs up.

Signed-off-by: Nalin Dahyabhai <f562fcb2a0b898bf0be1afc867ea92325d8f825f@redhat.com>

projectatomic/oci-register-machine