docs: fix typo

Bogus <code/>, and incorrect use of it's instead of its.

docs/formatdomain.html.in

@@ -2890,7 +2890,7 @@ qemu-kvm -net nic,model=? /dev/null
             </p>
             <p>
               Streaming mode is set by the <code>streaming</code>
-              element, settings it's <code>mode</code> attribute to one
+              element, settings its <code>mode</code> attribute to one
               of <code>filter</code>, <code>all</code>
               or <code>off</code>, <span class="since">since 0.9.2</span>.
             </p>
@@ -2903,8 +2903,8 @@ qemu-kvm -net nic,model=? /dev/null
               0.9.3</span>.
             </p>
             <p>
-              Mouse mode is set by the <code>mouse<code/> element,
-              setting it's <code>mode<code/> attribute to one of
+              Mouse mode is set by the <code>mouse</code> element,
+              setting its <code>mode</code> attribute to one of
               <code>server</code> or <code>client</code> ,
               <span class="since">since 0.9.11</span>. If no mode is
               specified, the qemu default will be used (client mode).