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>
    <revisions rvcontinue="237000" />
  </query-continue>
  <query>
    <pages>
      <page pageid="23527" ns="0" title="Main Page">
        <revisions>
          <rev user="Pescetti" timestamp="2022-12-31T16:18:16Z" comment="Add link to Source code directories" />
          <rev user="Pescetti" timestamp="2015-12-13T15:10:10Z" comment="Combine release and language pack download information" />
          <rev user="Pescetti" timestamp="2015-12-12T22:09:22Z" comment="Remove obsolete ODF section" />
          <rev user="Pescetti" timestamp="2015-12-12T22:08:10Z" comment="Update Software section" />
          <rev user="Pescetti" timestamp="2015-12-12T22:05:59Z" comment="Update Participation section" />
        </revisions>
      </page>
    </pages>
  </query>
</api>