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 alcontinue="Ejercicio:_Barco_musical" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Bitbot" />
      <l ns="0" title="Ca:Pagename" />
      <l ns="0" title="Calendari, per programar les visites a les vostres escoles/instituts" />
      <l ns="0" title="Calendari Dibatec 2016-2017" />
      <l ns="0" title="Calendari Dibatec 5 (2017-2018)" />
      <l ns="0" title="Desactiva la bomba" />
      <l ns="0" title="Edubot" />
      <l ns="0" title="Ejercicio: 3 en ralla" />
      <l ns="0" title="Ejercicio: APIs" />
      <l ns="0" title="Ejercicio: AplicaciĆ³n de turismo y servicios" />
    </alllinks>
  </query>
</api>