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>
    <alllinks>
      <l ns="0" title="Domain-based PPI network by Weighted Mutual Information (WMI)" />
      <l ns="0" title="Domain2Pathway by Pathway Specificity (PS)" />
      <l ns="0" title="PS" />
      <l ns="0" title="People:Album:2013 Group photo" />
      <l ns="0" title="People:Album:2013 Summer MT" />
      <l ns="0" title="People:Album:2014 Group photo" />
      <l ns="0" title="People:Album:2014 Summer MT" />
      <l ns="0" title="People:Album:2015 Group photo" />
      <l ns="0" title="People:Album:2015 Teachers&#039; day" />
      <l ns="0" title="People:Album:2016 10th AYRCOB, GIW" />
    </alllinks>
  </query>
  <query-continue>
    <alllinks alcontinue="People:Album:2016_9th_AYRCOB|224" />
  </query-continue>
</api>