docs: Fix a couple of typos on the storage pool html

Fix format of the secret XML in the example. The XML had an extraneous
"type='iscsi'" (which is used by the <disk> definitions)

The world wide node name had a typo in the acronym (wwwn).

docs/formatstorage.html.in

@@ -80,7 +80,7 @@
           <host name="iscsi.example.com"/>
           <device path="demo-target"/>
           <auth type='chap' username='myname'>
-            <secret type='iscsi' usage='mycluster_myname'/>
+            <secret usage='mycluster_myname'/>
           </auth>
           <vendor name="Acme"/>
           <product name="model"/>
@@ -179,7 +179,7 @@
             </dd>
         </dl>
         <dl>
-          <dt><code>wwwn</code> and <code>wwpn</code></dt>
+          <dt><code>wwnn</code> and <code>wwpn</code></dt>
           <dd>The "World Wide Node Name" (<code>wwnn</code>) and "World Wide
             Port Name" (<code>wwpn</code>) are used by the "fc_host" adapter
             to uniquely identify the device in the Fibre Channel storage fabric