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>
    <alllinks galcontinue="Brotherhooves_Social" />
  </query-continue>
  <query>
    <pages>
      <page pageid="185" ns="0" title="Baby Cakes" />
      <page pageid="417" ns="0" title="Banned Videos" />
      <page pageid="215" ns="0" title="Bats!" />
      <page pageid="15" ns="0" title="BerryTube First Time Visitor&#039;s Guide" />
      <page pageid="267" ns="0" title="BerryTube My Little Pony Drinking Game Rules" />
      <page pageid="591" ns="0" title="Between Dark and Dawn" />
      <page pageid="321" ns="0" title="Bloom and Gloom" />
      <page pageid="154" ns="0" title="Boast Busters" />
      <page pageid="6" ns="0" title="Bookslut" />
      <page pageid="157" ns="0" title="Bridle Gossip" />
    </pages>
  </query>
</api>