docs: Correct typos in scsi hostdev and address elements

The type='scsi' parameter of an address element is ignored
if placed within a hostdev section, and rejected by the XML
schema used by virt-xml-validate. Remove it from the doc,
and correct a typo in the remaining address arguments.
Signed-off-by: NEric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: NMatthew Rosato <mjrosato@linux.vnet.ibm.com>
Reviewed-by: NStefan Zimmermann <stzi@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

docs/formatdomain.html.in

@@ -2866,7 +2866,7 @@
       <dd>Drive addresses have the following additional
         attributes: <code>controller</code> (a 2-digit controller
         number), <code>bus</code> (a 2-digit bus number),
-        <code>target</code> (a 2-digit bus number),
+        <code>target</code> (a 2-digit target number),
         and <code>unit</code> (a 2-digit unit number on the bus).
       </dd>
       <dt><code>type='virtio-serial'</code></dt>
@@ -3175,7 +3175,7 @@
     &lt;hostdev mode='subsystem' type='scsi' sgio='filtered' rawio='yes'&gt;
       &lt;source&gt;
         &lt;adapter name='scsi_host0'/&gt;
-        &lt;address type='scsi' bus='0' target='0' unit='0'/&gt;
+        &lt;address bus='0' target='0' unit='0'/&gt;
       &lt;/source&gt;
       &lt;readonly/&gt;
       &lt;address type='drive' controller='0' bus='0' target='0' unit='0'/&gt;