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>
    <allfileusages gafcontinue="Baillet_Flore_acte_de_+.jpg|10698" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1230" ns="0" title="Motor Club Huy" />
      <page pageid="2301" ns="0" title="Ferme de la Commanderie" />
      <page pageid="2726" ns="0" title="Groupe de recherche de l&#039;histoire et conservation du patrimoine Tihangeois" />
      <page pageid="3061" ns="0" title="Confrérie des Magneûs d&#039;Parbolèts di Bwès Borsu" />
      <page pageid="3160" ns="0" title="Vincent Smitz" />
      <page pageid="4806" ns="0" title="Warzée, Pierre au sacrement" />
      <page pageid="4810" ns="0" title="Warzée, Fusion des communes" />
      <page pageid="5212" ns="0" title="Arlette de Huy" />
      <page pageid="9163" ns="0" title="Baillet Auguste D249" />
      <page pageid="16207" ns="0" title="30 sculptures et statues publiques à HUY" />
    </pages>
  </query>
</api>