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>
    <pages>
      <page ns="0" title="E cig" missing="" />
      <page ns="0" title="Vaping with V2 cigs" missing="" />
      <page pageid="45" ns="0" title="Creating .DDS Textures for 3ds Max" />
      <page pageid="211" ns="0" title="Flatland" />
      <page pageid="181" ns="0" title="Getting Started for Platform Developers" />
      <page pageid="311" ns="0" title="Installation" />
      <page pageid="42" ns="0" title="Material Creation in 3ds Max 9" />
      <page pageid="32" ns="0" title="Platform Developer Communication" />
      <page pageid="183" ns="0" title="Sirikata" />
    </pages>
  </query>
</api>