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="20150913080823" timestamp="2015-09-13T08:08:23Z" ns="0" title="Technical Specifications" />
        <page value="20150913121507" timestamp="2015-09-13T12:15:07Z" ns="0" title="Operating System Specifications" />
        <page value="20150913121803" timestamp="2015-09-13T12:18:03Z" ns="0" title="DVB Devices" />
        <page value="20161029121047" timestamp="2016-10-29T12:10:47Z" ns="0" title="PC Hardware Specifications" />
        <page value="20170420051630" timestamp="2017-04-20T05:16:30Z" ns="0" title="EumetCast.de Website" />
        <page value="20171022112102" timestamp="2017-10-22T11:21:02Z" ns="0" title="Webmail, Outlook and Exchage" />
        <page value="20171022173256" timestamp="2017-10-22T17:32:56Z" ns="0" title="Remote Services" />
        <page value="20180214161304" timestamp="2018-02-14T16:13:04Z" ns="0" title="Services" />
        <page value="20180815062347" timestamp="2018-08-15T06:23:47Z" ns="0" title="FTP Server" />
        <page value="20180815065203" timestamp="2018-08-15T06:52:03Z" ns="0" title="EumetCast Dissemination Service" />
      </results>
    </querypage>
  </query>
</api>