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>
    <alltransclusions gatcontinue="Salon|2109" />
  </query-continue>
  <query>
    <pages>
      <page pageid="935" ns="2" title="Utilisateur:SpideR" />
      <page pageid="942" ns="4" title="RS2I WiKi:Aide" />
      <page pageid="950" ns="0" title="Trombinoscope" />
      <page pageid="971" ns="1" title="Discussion:Trombinoscope" />
      <page pageid="1028" ns="0" title="Salon:Bringue" />
      <page pageid="1037" ns="0" title="Questions fréquemment posées" />
      <page pageid="1096" ns="15" title="Discussion catégorie:Salons prives" />
      <page pageid="1098" ns="0" title="Le RS2I recrute" />
      <page pageid="1885" ns="0" title="Salon:Chocolat" />
      <page pageid="1934" ns="2" title="Utilisateur:L33thium" />
    </pages>
  </query>
</api>