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="Gremios" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Barra de Menú" missing="" />
      <page ns="0" title="Botín" missing="" />
      <page ns="0" title="E cigs" missing="" />
      <page ns="0" title="Easy Payday Loans" missing="" />
      <page ns="0" title="Fuente Bélica" missing="" />
      <page pageid="525" ns="0" title="Campamento de Guerra" />
      <page pageid="327" ns="0" title="Capullo Xhodotoriense" />
      <page pageid="471" ns="0" title="Credo" />
      <page pageid="607" ns="0" title="Defender" />
      <page pageid="1734" ns="0" title="Espía" />
    </pages>
  </query>
</api>