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>
    <querypage name="Ancientpages">
      <results>
        <page value="20100913134017" timestamp="2010-09-13T13:40:17Z" ns="0" title="Black Bean Hummus" />
        <page value="20100913134051" timestamp="2010-09-13T13:40:51Z" ns="0" title="Cilantro Chutney" />
        <page value="20110108164724" timestamp="2011-01-08T16:47:24Z" ns="0" title="Recipes" />
        <page value="20110108165126" timestamp="2011-01-08T16:51:26Z" ns="0" title="Chana Saag Chickpea Spinach Curry" />
        <page value="20110131034455" timestamp="2011-01-31T03:44:55Z" ns="0" title="Main Page" />
        <page value="20110204134219" timestamp="2011-02-04T13:42:19Z" ns="0" title="All-Star Game Links" />
      </results>
    </querypage>
  </query>
</api>