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-continue>
    <allredirects garcontinue="Dark_Ages|582" />
  </query-continue>
  <query>
    <pages>
      <page pageid="138" ns="0" title="Bilbido Tastyflute" />
      <page pageid="139" ns="0" title="Butt Butterscotch" />
      <page pageid="140" ns="0" title="Kylee O&#039;Ren" />
      <page pageid="147" ns="0" title="Bugeye Jim" />
      <page pageid="333" ns="0" title="Bacon Theather" />
      <page pageid="353" ns="0" title="Common Calendar" />
      <page pageid="577" ns="0" title="Darius Korelius" />
      <page pageid="613" ns="0" title="Gazzpatcho Talbot" />
      <page pageid="658" ns="0" title="Coussins" />
      <page pageid="874" ns="0" title="Church of Tempus" />
    </pages>
  </query>
</api>