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="Bakaresh|15074" />
  </query-continue>
  <query>
    <pages>
      <page pageid="11171" ns="0" title="Heiligtum Beliars" />
      <page pageid="11376" ns="0" title="Arena von Mora Sul" />
      <page pageid="11679" ns="0" title="Baal Netbek (Dialog)" />
      <page pageid="11759" ns="0" title="Baal Lukor (Dialog)" />
      <page pageid="12319" ns="0" title="Tempel von Bakaresh" />
      <page pageid="13071" ns="0" title="Arena von Bakaresh" />
      <page pageid="13341" ns="0" title="Beliar Heiligtums" />
      <page pageid="13368" ns="0" title="Hafenstadt Bakaresh" />
      <page pageid="14519" ns="0" title="Heiliges Zentrum" />
      <page pageid="14983" ns="0" title="Allerheiligstes (Bakaresh)" />
    </pages>
  </query>
</api>