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="BEAUTY 2013" />
      <l ns="0" title="BLV2013" />
      <l ns="0" title="BLV2013 (Baryon and Lepton Number Violation)" />
      <l ns="0" title="BNL 2013 Top10" />
      <l ns="0" title="BNL Link to Nobel Prize" />
      <l ns="0" title="Belle2-logo.png" />
      <l ns="0" title="Belle II" />
      <l ns="0" title="Bilas Pal" />
      <l ns="0" title="Breakthrough Prize 2016" />
      <l ns="0" title="Breakthrough of 2012" />
    </alllinks>
  </query>
  <query-continue>
    <alllinks alcontinue="Brett_Viren" />
  </query-continue>
</api>