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="B-state|13639" />
  </query-continue>
  <query>
    <pages>
      <page pageid="12143" ns="0" title="Chaos Constructions 2012" />
      <page pageid="13176" ns="0" title="DiHalt 2015 Lite" />
      <page pageid="13233" ns="0" title="Sochi Party 2015" />
      <page pageid="13237" ns="0" title="FOReVER 2015" />
      <page pageid="13267" ns="0" title="Multimatograf 2015" />
      <page pageid="13345" ns="0" title="ArtField 2015" />
      <page pageid="13447" ns="0" title="DiHalt 2016" />
      <page pageid="13562" ns="0" title="DiHalt 2017 Lite" />
      <page pageid="13617" ns="0" title="FOReVER 2017" />
      <page pageid="14590" ns="0" title="ACR Corp" />
    </pages>
  </query>
</api>