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="Bottom|520" />
  </query-continue>
  <query>
    <pages>
      <page pageid="55" ns="0" title="Best practices" />
      <page pageid="70" ns="0" title="FAQ" />
      <page pageid="341" ns="0" title="Balls Out Risky Kink" />
      <page pageid="535" ns="0" title="Frequently asked questions" />
      <page pageid="711" ns="0" title="Symbols" />
      <page pageid="746" ns="0" title="Beginner Bondage" />
      <page pageid="784" ns="0" title="Bisexuality" />
      <page pageid="895" ns="0" title="Boot blacking" />
      <page pageid="896" ns="0" title="Boot Blacking" />
      <page pageid="897" ns="0" title="Boot black" />
    </pages>
  </query>
</api>