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 alcontinue="Guaranteed_Google_Accuracy" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Chrome" />
      <l ns="0" title="Clearing Browser Cache" />
      <l ns="0" title="Difference between Proxy and VPN" />
      <l ns="0" title="Error 619: How to fix" />
      <l ns="0" title="FAQ" />
      <l ns="0" title="Firefox" />
      <l ns="0" title="Fixing Connection Settings" />
      <l ns="0" title="FoxyProxy Products" />
      <l ns="0" title="FoxyProxy Services" />
      <l ns="0" title="FoxyProxy with I2P" />
    </alllinks>
  </query>
</api>