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>
    <allpages gapcontinue="Templates_do_pacote_Card" />
  </query-continue>
  <query>
    <pages>
      <page pageid="544" ns="0" title="Teclas de Atalho" contentmodel="wikitext" pagelanguage="pt-br" touched="2016-04-22T13:53:34Z" lastrevid="998" counter="416" length="1735" new="" />
      <page pageid="547" ns="0" title="Teclas de Atalho a serem usadas durante a exibição da programação" contentmodel="wikitext" pagelanguage="pt-br" touched="2023-05-19T11:53:44Z" lastrevid="3086" counter="3164" length="2438" />
      <page pageid="651" ns="0" title="Templates de Campeonatos" contentmodel="wikitext" pagelanguage="pt-br" touched="2023-07-04T19:04:14Z" lastrevid="3881" counter="7714" length="7319" />
      <page pageid="727" ns="0" title="Templates de Loterias" contentmodel="wikitext" pagelanguage="pt-br" touched="2023-07-04T19:25:15Z" lastrevid="3885" counter="10548" length="9132" />
    </pages>
  </query>
</api>