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="Temple_Grounds:_Command_Chamber" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1015" ns="0" title="Blogg Morph Ball Glitch" />
      <page pageid="1050" ns="0" title="Bubble Portal" />
      <page pageid="875" ns="0" title="Current Obstacles to Skipping Items" />
      <page pageid="738" ns="0" title="Dark Missile Trooper" />
      <page pageid="874" ns="0" title="Early Power Bomb Expansion" />
      <page pageid="789" ns="0" title="Fastest Runs So Far" />
      <page pageid="868" ns="0" title="Kip dash" />
      <page pageid="5" ns="0" title="Main Page" />
      <page pageid="1027" ns="0" title="Quick reload Missile" />
      <page pageid="751" ns="0" title="Sky Temple Grounds: Abandoned Base" />
    </pages>
  </query>
</api>