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="20150525071736" timestamp="2015-05-25T07:17:36Z" ns="0" title="Install AVR 3808" />
        <page value="20150525072114" timestamp="2015-05-25T07:21:14Z" ns="0" title="Install AVR 3808 serial" />
        <page value="20150525072334" timestamp="2015-05-25T07:23:34Z" ns="0" title="Work in progress" />
        <page value="20150525072535" timestamp="2015-05-25T07:25:35Z" ns="0" title="Install Hue clock" />
        <page value="20150603080835" timestamp="2015-06-03T08:08:35Z" ns="0" title="Install Hue" />
        <page value="20150604145036" timestamp="2015-06-04T14:50:36Z" ns="0" title="Install phoneDistance" />
        <page value="20170331122344" timestamp="2017-03-31T12:23:44Z" ns="0" title="Install MSNswitch" />
        <page value="20170721094101" timestamp="2017-07-21T09:41:01Z" ns="0" title="Install meteo" />
        <page value="20170923071917" timestamp="2017-09-23T07:19:17Z" ns="0" title="Install serial port" />
        <page value="20171229142758" timestamp="2017-12-29T14:27:58Z" ns="0" title="Install central" />
      </results>
    </querypage>
  </query>
</api>