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="20180308151233" timestamp="2018-03-08T15:12:33Z" ns="0" title="Account Application Form" />
        <page value="20180308161217" timestamp="2018-03-08T16:12:17Z" ns="0" title="Software resources" />
        <page value="20180903123949" timestamp="2018-09-03T12:39:49Z" ns="0" title="Backups" />
        <page value="20181215100527" timestamp="2018-12-15T10:05:27Z" ns="0" title="File and directory permissions and ownership" />
        <page value="20190123190423" timestamp="2019-01-23T19:04:23Z" ns="0" title="Safety and security at the Lab" />
        <page value="20190519145742" timestamp="2019-05-19T14:57:42Z" ns="0" title="Running jobs on our servers" />
        <page value="20190628064655" timestamp="2019-06-28T06:46:55Z" ns="0" title="Python" />
        <page value="20191031200740" timestamp="2019-10-31T20:07:40Z" ns="0" title="About" />
        <page value="20200318013211" timestamp="2020-03-18T01:32:11Z" ns="0" title="Obtaining an account" />
        <page value="20200520050241" timestamp="2020-05-20T05:02:41Z" ns="0" title="Hardware resources" />
      </results>
    </querypage>
  </query>
</api>