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 pageid="55" ns="0" title="Dag voor de Radio Amateur (DvdRA) 2014" />
      <page pageid="44" ns="0" title="HackRf Ubuntu Install" />
      <page pageid="81" ns="0" title="LNB overzicht" />
      <page pageid="31" ns="0" title="Repeater Functies" />
      <page pageid="35" ns="0" title="Repeater Menu Struktuur" />
      <page pageid="32" ns="0" title="Repeater UDP besturing commando&#039;s" />
      <page pageid="405" ns="0" title="Rocket Combi Antenna QO-100" />
    </pages>
  </query>
</api>