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="お金を増やす方法" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="DMI" />
      <l ns="0" title="ETF" />
      <l ns="0" title="ICカードリーダライタ" />
      <l ns="0" title="NASDAQ" />
      <l ns="0" title="NewArticle" />
      <l ns="0" title="PERによる割安株の探し方" />
      <l ns="0" title="SBI証券で年間の損益通算を確認する方法" />
      <l ns="0" title="TAX FREEとDUTY FREEの違いは何か？" />
      <l ns="0" title="Yahoo!公金支払いで公共料金をクレジットカードで支払う" />
      <l ns="0" title="e-Tax" />
    </alllinks>
  </query>
</api>