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="crypto" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Sails.js" missing="" />
      <page pageid="12" ns="0" title="Express" />
      <page pageid="15" ns="0" title="ExpressによるHello World" />
      <page pageid="14" ns="0" title="Expressをインストールする" />
      <page pageid="61" ns="0" title="JSDoc" />
      <page pageid="23" ns="0" title="JavaScriptの拡張子" />
      <page pageid="27" ns="0" title="JavaScript言語解説" />
      <page pageid="24" ns="0" title="JavaScript開発環境" />
      <page pageid="71" ns="0" title="Node.js Tools for Visual Studio" />
      <page pageid="45" ns="0" title="WebSocket" />
    </pages>
  </query>
</api>