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="405" ns="6" title="File:Static routing netgear.png" />
      <page pageid="367" ns="6" title="File:UNR Add Gnome Main Menu to Panel.png" />
      <page pageid="368" ns="6" title="File:UNR Functioning Main Menu.png" />
      <page pageid="366" ns="6" title="File:UNR Unlock Separator.png" />
      <page pageid="363" ns="6" title="File:Xrdp login.png" />
    </pages>
  </query>
</api>