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="Main Page" rcid="23367" pageid="4816" revid="11929" old_revid="11928" timestamp="2023-07-22T00:46:30Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="23366" pageid="4816" revid="11928" old_revid="11927" timestamp="2023-06-01T06:37:13Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="23365" pageid="4816" revid="11927" old_revid="11926" timestamp="2023-06-01T06:35:57Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="23364" pageid="4816" revid="11926" old_revid="11924" timestamp="2022-09-11T03:04:42Z" />
      <rc type="log" ns="6" title="File:W2022 Q3.pdf" rcid="23363" pageid="0" revid="0" old_revid="0" timestamp="2022-09-11T03:03:49Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="23362" pageid="4816" revid="11924" old_revid="11922" timestamp="2022-09-08T01:58:21Z" />
      <rc type="log" ns="6" title="File:W2022 Q2.pdf" rcid="23361" pageid="0" revid="0" old_revid="0" timestamp="2022-09-08T01:56:13Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="23360" pageid="4816" revid="11922" old_revid="11917" timestamp="2022-09-07T03:57:33Z" />
      <rc type="log" ns="6" title="File:W2022 Q5.pdf" rcid="23359" pageid="0" revid="0" old_revid="0" timestamp="2022-09-07T03:54:36Z" />
      <rc type="log" ns="6" title="File:Formula sheet.pdf" rcid="23358" pageid="5104" revid="0" old_revid="0" timestamp="2022-09-06T01:31:46Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2022-09-06T01:01:14Z" />
  </query-continue>
</api>