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="Dashes" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="24" ns="0" title="BSJ" />
      <p pageid="29" ns="0" title="Berserker Lord (first battle)" />
      <p pageid="36" ns="0" title="Bomb Jumps" />
      <p pageid="11" ns="0" title="Boss Tricks" />
      <p pageid="19" ns="0" title="Bypassing Items" />
      <p pageid="30" ns="0" title="Chozo Observatory SW" />
      <p pageid="6" ns="0" title="Completed Speed Runs" />
      <p pageid="41" ns="0" title="Creche Transit SW" />
      <p pageid="14" ns="0" title="Current events" />
      <p pageid="25" ns="0" title="Dark Samus" />
    </allpages>
  </query>
</api>