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>
    <querypage name="Ancientpages">
      <results>
        <page value="20180218153921" timestamp="2018-02-18T15:39:21Z" ns="0" title="Help &amp; Instructions" />
        <page value="20181214091924" timestamp="2018-12-14T09:19:24Z" ns="0" title="Help and Instructions" />
        <page value="20190407120739" timestamp="2019-04-07T12:07:39Z" ns="0" title="Translations" />
        <page value="20200105205349" timestamp="2020-01-05T20:53:49Z" ns="0" title="Generating a lookup file for runners" />
        <page value="20210112162425" timestamp="2021-01-12T16:24:25Z" ns="0" title="Bluetooth Printers" />
        <page value="20210426202122" timestamp="2021-04-26T20:21:22Z" ns="0" title="Tips &amp; Tricks" />
        <page value="20211121221039" timestamp="2021-11-21T22:10:39Z" ns="0" title="Supported devices" />
        <page value="20211121224536" timestamp="2021-11-21T22:45:36Z" ns="0" title="Places where the app is mentioned" />
        <page value="20220423140436" timestamp="2022-04-23T14:04:36Z" ns="0" title="Main Page" />
        <page value="20230113184348" timestamp="2023-01-13T18:43:48Z" ns="0" title="Integrity Policy" />
      </results>
    </querypage>
  </query>
</api>