You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <pages>
      <page pageid="98" ns="6" title="File:Padding paper.pdf" />
      <page pageid="97" ns="6" title="File:Padding presentation.pdf" />
      <page pageid="95" ns="6" title="File:Padvisor v1.0.tar.gz" />
      <page pageid="94" ns="6" title="File:PolyCheck-Bao.pdf" />
      <page pageid="102" ns="6" title="File:Test.jpg" />
    </pages>
  </query>
</api>