You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="109" ns="0" title="係長 青島俊作2 事件はまたまた取調室で起きている!" />
      <page id="6" ns="0" title="第2話配役リスト" />
    </random>
  </query>
</api>