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="Balkon2" />
  </query-continue>
  <query>
    <pages>
      <page pageid="317" ns="0" title="BBQ" />
      <page pageid="5139" ns="0" title="BBQ 05 oktober 2018" />
      <page pageid="5064" ns="0" title="BBQ 21 september 2018" />
      <page pageid="5063" ns="0" title="BBQ 24 augustus 2018" />
      <page pageid="5062" ns="0" title="BBQ 27 juli 2018" />
      <page pageid="4911" ns="0" title="BIT Nieuwjaarsborrel 2018" />
      <page pageid="5222" ns="0" title="BIT Nieuwjaarsborrel 2019" />
      <page pageid="693" ns="0" title="BORG" />
      <page pageid="3723" ns="0" title="Badkamer Stoneshop-proof maken" />
      <page pageid="4436" ns="0" title="Balkon1" />
    </pages>
  </query>
</api>