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="Bartender|2599" />
  </query-continue>
  <query>
    <pages>
      <page pageid="946" ns="0" title="Pure Breed" />
      <page pageid="970" ns="0" title="Journals" />
      <page pageid="1574" ns="0" title="Residents" />
      <page pageid="2373" ns="0" title="Angerfist" />
      <page pageid="2492" ns="0" title="De Tweede Lijn" />
      <page pageid="2593" ns="0" title="September 2018" />
      <page pageid="2596" ns="0" title="Oktober 2018" />
      <page pageid="2597" ns="0" title="Pack Howling Wind" />
      <page pageid="2598" ns="0" title="Apache verlaat Howling Wind" />
      <page pageid="2692" ns="0" title="Het Sept van het Verste Noorden" />
    </pages>
  </query>
</api>