Fix incorrect nova boot command
Fix incorrect nova boot command

nova boot need a positional parameter for server name, but the example
for user guide section of nova boot is wrong, we should fix it.

Note that I also correct the output according to the parameter.

Change-Id: I5f41d5fdd15ea274222e35705002fc56317f4989
Closes-Bug: #1285559

AlekhyaMallina-Vedams/openstack-manuals,potsmaster/openstack-manuals,kairoaraujo/openstack-manuals,gongysh2004/openstack-manual,kairoaraujo/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals,potsmaster/openstack-manuals,saeki-masaki/openstack-manuals,Akasurde/openstack-manuals,openstack/openstack-manuals,Akasurde/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals