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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20141211100354" timestamp="2014-12-11T10:03:54Z" ns="0" title="Widget:YouTube" />
        <page value="20141221022057" timestamp="2014-12-21T02:20:57Z" ns="0" title="K65 Tutorials" />
        <page value="20141221022130" timestamp="2014-12-21T02:21:30Z" ns="0" title="K65 Known Bugs" />
        <page value="20141221123013" timestamp="2014-12-21T12:30:13Z" ns="0" title="Alternate VCS definitions" />
        <page value="20141221123136" timestamp="2014-12-21T12:31:36Z" ns="0" title="K65 Tutorial 1" />
        <page value="20141221123228" timestamp="2014-12-21T12:32:28Z" ns="0" title="K65 Tutorial 2" />
        <page value="20141221123241" timestamp="2014-12-21T12:32:41Z" ns="0" title="K65 Tutorial 3" />
        <page value="20150612125151" timestamp="2015-06-12T12:51:51Z" ns="0" title="K65 Evaluator" />
        <page value="20150615155818" timestamp="2015-06-15T15:58:18Z" ns="0" title="K65 Syntax" />
        <page value="20151015104926" timestamp="2015-10-15T10:49:26Z" ns="0" title="Projects using K65" />
      </results>
    </querypage>
  </query>
</api>