should use a normal user rather than root in the command example

[Fang Wenqi]

In the following example:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
If the account you use to ssh into your server does not have permissions to run libvirt, but has sudo privileges, do:

$ ssh -X root@server
$ sudo virt-manager
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

it might be confused using root@server to represent an account that does not have permissions, I think it's more clear to use something like user@server instead.

-----------------------------------
Release: 0.9 on 2016-12-29 09:59
SHA: e0a361fb1c3a8e8e0c4da8885ee2f88947154a0d
Source: http://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/image-guide/source/virt-manager.rst
URL: http://docs.openstack.org/image-guide/virt-manager.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/415878

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/415878
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=a552fd9f04518d4ff7691fcaaddcb3b1e39acea8
Submitter: Jenkins
Branch: master

commit a552fd9f04518d4ff7691fcaaddcb3b1e39acea8
Author: KATO Tomoyuki <email address hidden>
Date: Fri Dec 30 22:51:22 2016 +0900

    [image-guide] change root to user for non-admin

    Change-Id: I4bb4f302b3ecc54a89587f19ac5feffad2016a28
    Closes-Bug: #1653078

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.