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="Barbeque_(Guild)" />
  </query-continue>
  <query>
    <pages>
      <page pageid="61675" ns="0" title="Baby Mimic" />
      <page pageid="21213" ns="0" title="Backfire Barrier" />
      <page pageid="26695" ns="0" title="Bad Luck and Brimstone" />
      <page pageid="40647" ns="0" title="Bad Luck and Brimstone/Loadout" />
      <page pageid="38757" ns="0" title="Bad Luck and Brimstone/Lobby" />
      <page pageid="25383" ns="0" title="Baleful Aura" />
      <page pageid="3119" ns="0" title="Ban" />
      <page pageid="8129" ns="0" title="Bandolier" />
      <page pageid="5144" ns="0" title="Barbarous Thorn Blade" />
      <page pageid="5152" ns="0" title="Barbarous Thorn Shield" />
    </pages>
  </query>
</api>