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="Secure Gateway Training Videos" rcid="325360" pageid="24380" revid="314946" old_revid="314945" timestamp="2020-05-12T15:17:00Z" />
      <rc type="edit" ns="0" title="Secure Gateway Training Videos" rcid="325359" pageid="24380" revid="314945" old_revid="314944" timestamp="2019-10-24T17:26:40Z" />
      <rc type="edit" ns="0" title="Secure Gateway Training Videos" rcid="325358" pageid="24380" revid="314944" old_revid="314942" timestamp="2019-05-30T17:09:05Z" />
      <rc type="log" ns="6" title="File:SecureMessagingGateway-Demo May2019.pptx" rcid="325357" pageid="0" revid="0" old_revid="0" timestamp="2019-05-30T17:08:25Z" />
      <rc type="edit" ns="0" title="Secure Gateway Training Videos" rcid="325356" pageid="24380" revid="314942" old_revid="314940" timestamp="2019-05-30T17:07:46Z" />
      <rc type="log" ns="6" title="File:SecureMessagingGateway-Demo Mar2019.pptx" rcid="325355" pageid="0" revid="0" old_revid="0" timestamp="2019-05-30T17:06:51Z" />
      <rc type="edit" ns="0" title="Secure Gateway Training Videos" rcid="325354" pageid="24380" revid="314940" old_revid="314938" timestamp="2019-05-30T16:38:11Z" />
      <rc type="edit" ns="0" title="Vertigo Getting Started" rcid="325353" pageid="275" revid="314939" old_revid="314924" timestamp="2019-03-05T19:31:52Z" />
      <rc type="edit" ns="0" title="Secure Gateway Training Videos" rcid="325352" pageid="24380" revid="314938" old_revid="314891" timestamp="2019-03-05T19:31:27Z" />
      <rc type="edit" ns="0" title="GWAVA Getting Started" rcid="325351" pageid="200" revid="314937" old_revid="314552" timestamp="2019-03-05T19:31:07Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2019-03-05T19:30:42Z" />
  </query-continue>
</api>