Docs: update EXAMPLES section of virt-sandbox man page
Docs: update EXAMPLES section of virt-sandbox man page

Signed-off-by: Alex Jia <e236faec8cb8371bfb245ba3769a84afc9a11438@redhat.com>

gczarcinski/libvirt-sandbox,agx/libvirt-sandbox-debian,erenyagdiran/libvirt-sandbox,libvirt/libvirt-sandbox,erenyagdiran/libvirt-sandbox,agx/libvirt-sandbox-debian,gczarcinski/libvirt-sandbox,gczarcinski/libvirt-sandbox,agx/libvirt-sandbox-debian,libvirt/libvirt-sandbox,libvirt/libvirt-sandbox,gczarcinski/libvirt-sandbox,gczarcinski/libvirt-sandbox,agx/libvirt-sandbox-debian,erenyagdiran/libvirt-sandbox,agx/libvirt-sandbox-debian,gczarcinski/libvirt-sandbox,erenyagdiran/libvirt-sandbox