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 galcontinue="Адское_пламя" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Previously featured facts" missing="" />
      <page ns="0" title="Team Fortress Wiki:Discussion" missing="" />
      <page ns="0" title="Team Fortress Wiki:Featured articles" missing="" />
      <page ns="0" title="Team Fortress Wiki:Tasks" missing="" />
      <page ns="0" title="Team Fortress Wiki:Terms of Use" missing="" />
      <page pageid="504" ns="0" title="CRI" />
      <page pageid="1133" ns="0" title="Hаука" />
      <page pageid="578" ns="0" title="Webmoney" />
      <page pageid="473" ns="0" title="Ёж" />
      <page pageid="217" ns="0" title="Агрессии" />
    </pages>
  </query>
</api>