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>
    <allpages apcontinue="Earthbound_Any%_Glitchless" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="82" ns="0" title="Breath of Fire" />
      <p pageid="83" ns="0" title="Breath of Fire Any% Guide" />
      <p pageid="91" ns="0" title="Breath of Fire Any% Mrbl3 Guide" />
      <p pageid="4" ns="0" title="Chrono Trigger" />
      <p pageid="24" ns="0" title="Chrono Trigger Any% Route" />
      <p pageid="5" ns="0" title="Chrono Trigger Glitchless Route" />
      <p pageid="168" ns="0" title="Dragon Quest XI" />
      <p pageid="169" ns="0" title="Dragon Quest XI Switch Any% Speedrun Notes" />
      <p pageid="2" ns="0" title="Earthbound" />
      <p pageid="46" ns="0" title="Earthbound All Photos Route" />
    </allpages>
  </query>
</api>