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 arcontinue="Temple_Grounds:_Command_Chamber" />
  </query-continue>
  <query>
    <allredirects>
      <r ns="0" title="Blogg Morph Ball Glitch" />
      <r ns="0" title="Bubble Portal" />
      <r ns="0" title="Current Obstacles to Skipping Items" />
      <r ns="0" title="Dark Missile Trooper" />
      <r ns="0" title="Early Power Bomb Expansion" />
      <r ns="0" title="Fastest Runs So Far" />
      <r ns="0" title="Kip dash" />
      <r ns="0" title="Main Page" />
      <r ns="0" title="Quick reload Missile" />
      <r ns="0" title="Sky Temple Grounds: Abandoned Base" />
    </allredirects>
  </query>
</api>