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="20130806032327" timestamp="2013-08-06T03:23:27Z" ns="0" title="Mailing Lists" />
        <page value="20130806034216" timestamp="2013-08-06T03:42:16Z" ns="0" title="Contributing" />
        <page value="20130902055848" timestamp="2013-09-02T05:58:48Z" ns="0" title="PackagingNotes" />
        <page value="20130902062816" timestamp="2013-09-02T06:28:16Z" ns="0" title="Permission denied" />
        <page value="20130902083034" timestamp="2013-09-02T08:30:34Z" ns="0" title="GF Admin/Build" />
        <page value="20130902083054" timestamp="2013-09-02T08:30:54Z" ns="0" title="GF Admin/" />
        <page value="20130902083107" timestamp="2013-09-02T08:31:07Z" ns="0" title="GF Admin" />
        <page value="20210519205057" timestamp="2021-05-19T20:50:57Z" ns="0" title="IRC" />
        <page value="20220805122243" timestamp="2022-08-05T12:22:43Z" ns="0" title="Ghettoforge Keys" />
        <page value="20240509101208" timestamp="2024-05-09T10:12:08Z" ns="0" title="News" />
      </results>
    </querypage>
  </query>
</api>