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>
    <recentchanges>
      <rc type="edit" ns="0" title="Releases / Versions" rcid="1518" pageid="189" revid="1495" old_revid="1491" timestamp="2020-07-08T13:46:36Z" />
      <rc type="edit" ns="0" title="Change Log Kalypso Template" rcid="1517" pageid="45" revid="1494" old_revid="1493" timestamp="2020-07-08T13:34:11Z" />
      <rc type="edit" ns="0" title="Change Log Kalypso Template" rcid="1516" pageid="45" revid="1493" old_revid="1490" timestamp="2020-07-08T13:32:25Z" />
      <rc type="new" ns="0" title="Change Log Kalypso 20.03" rcid="1515" pageid="333" revid="1492" old_revid="0" timestamp="2020-07-08T13:31:35Z" />
      <rc type="edit" ns="0" title="Releases / Versions" rcid="1514" pageid="189" revid="1491" old_revid="1473" timestamp="2020-07-08T13:30:21Z" />
      <rc type="edit" ns="0" title="Change Log Kalypso Template" rcid="1513" pageid="45" revid="1490" old_revid="1489" timestamp="2020-03-10T14:18:23Z" />
      <rc type="edit" ns="0" title="Change Log Kalypso Template" rcid="1512" pageid="45" revid="1489" old_revid="1487" timestamp="2020-03-10T13:40:27Z" />
      <rc type="log" ns="6" title="File:Change Log 20 03 NetValidationView.PNG" rcid="1511" pageid="0" revid="0" old_revid="0" timestamp="2020-03-10T13:40:08Z" />
      <rc type="edit" ns="0" title="Change Log Kalypso Template" rcid="1510" pageid="45" revid="1487" old_revid="1484" timestamp="2020-03-10T13:35:41Z" />
      <rc type="log" ns="6" title="File:ChangeLog 20 03 BandSplit.PNG" rcid="1509" pageid="0" revid="0" old_revid="0" timestamp="2020-03-10T13:34:56Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2020-03-10T13:34:37Z" />
  </query-continue>
</api>