[et-mgmt-tools] virtinst: doc typo

[Guido Günther]

Hi,
trivial typo:

diff --git a/man/en/virt-install.pod b/man/en/virt-install.pod
index bfdc0f4..eb30c01 100644
--- a/man/en/virt-install.pod
+++ b/man/en/virt-install.pod
@@ -125,7 +125,7 @@ Disk device type. Value can be 'cdrom', 'disk', or 'floppy'. Default is
 'disk'. If a 'cdrom' is specified, and no install method is chosen, the
 cdrom is used as the install media.
 
-=item B<bux>
+=item B<bus>
 
 Disk bus type. Value can be 'ide', 'scsi', 'usb', 'virtio' or 'xen'.  The
 default is hypervisor dependent since not all hypervisors support all bus

Cheers,
 -- Guido