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="Diplomatie" />
  </query-continue>
  <query>
    <pages>
      <page pageid="292" ns="0" title="Barre de Menu" />
      <page pageid="133" ns="0" title="Box des Felúndin" />
      <page pageid="58" ns="0" title="Bâtiments" />
      <page pageid="275" ns="0" title="Camp de Guerre" />
      <page pageid="123" ns="0" title="Catapulte de cristal" />
      <page pageid="278" ns="0" title="Chariots de licorne" />
      <page pageid="161" ns="0" title="Cocon xhodonien" />
      <page pageid="26" ns="0" title="Communauté" />
      <page pageid="135" ns="0" title="Cour de palais" />
      <page pageid="30" ns="0" title="Créatures" />
    </pages>
  </query>
</api>