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="20110928101941" timestamp="2011-09-28T10:19:41Z" ns="0" title="Shield" />
        <page value="20110928115652" timestamp="2011-09-28T11:56:52Z" ns="0" title="Breakout and Modules" />
        <page value="20110928115708" timestamp="2011-09-28T11:57:08Z" ns="0" title="Tool" />
        <page value="20110928130403" timestamp="2011-09-28T13:04:03Z" ns="0" title="Dev Platform" />
        <page value="20140515064839" timestamp="2014-05-15T06:48:39Z" ns="0" title="Projets" />
        <page value="20140521072418" timestamp="2014-05-21T07:24:18Z" ns="0" title="Install OS to SD Card" />
        <page value="20140521081156" timestamp="2014-05-21T08:11:56Z" ns="0" title="Install OS to NAND Flash" />
        <page value="20140521094828" timestamp="2014-05-21T09:48:28Z" ns="0" title="Basic Test/Tutorial for ITEAD WIFI Shield REV2" />
        <page value="20140611040046" timestamp="2014-06-11T04:00:46Z" ns="0" title="MBoard" />
        <page value="20140611053909" timestamp="2014-06-11T05:39:09Z" ns="0" title="Iteadmaple" />
      </results>
    </querypage>
  </query>
</api>