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>
    <recentchanges rccontinue="20220506193403|253" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Windows Server Powershell Commands" pageid="31" revid="258" old_revid="256" rcid="263" timestamp="2024-03-12T22:42:43Z" />
      <rc type="edit" ns="0" title="Dell OMSA Non-Certified Drive Flag" pageid="60" revid="257" old_revid="255" rcid="262" timestamp="2024-01-03T23:32:28Z" />
      <rc type="edit" ns="0" title="Windows Server Powershell Commands" pageid="31" revid="256" old_revid="253" rcid="261" timestamp="2023-08-25T22:37:28Z" />
      <rc type="edit" ns="0" title="Dell OMSA Non-Certified Drive Flag" pageid="60" revid="255" old_revid="254" rcid="260" timestamp="2023-06-18T13:02:50Z" />
      <rc type="edit" ns="0" title="Dell OMSA Non-Certified Drive Flag" pageid="60" revid="254" old_revid="234" rcid="259" timestamp="2023-06-18T13:02:29Z" />
      <rc type="edit" ns="0" title="Windows Server Powershell Commands" pageid="31" revid="253" old_revid="247" rcid="258" timestamp="2022-11-30T13:32:29Z" />
      <rc type="edit" ns="0" title="Recovering After Failed Update All Services Disabled" pageid="47" revid="252" old_revid="162" rcid="257" timestamp="2022-07-13T02:51:24Z" />
      <rc type="edit" ns="0" title="Exchange Server Mailbox Migration" pageid="28" revid="251" old_revid="250" rcid="256" timestamp="2022-05-19T20:49:45Z" />
      <rc type="edit" ns="0" title="Exchange Server Mailbox Migration" pageid="28" revid="250" old_revid="249" rcid="255" timestamp="2022-05-19T18:38:18Z" />
      <rc type="edit" ns="0" title="Exchange Server Mailbox Migration" pageid="28" revid="249" old_revid="159" rcid="254" timestamp="2022-05-19T18:37:49Z" />
    </recentchanges>
  </query>
</api>