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 apcontinue="Corvet" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="443" ns="0" title="BIÊNIO MAIO DE 2014 – ABRIL 2016." />
      <p pageid="444" ns="0" title="BIÊNIO MAIO DE 2016 – ABRIL 2018." />
      <p pageid="463" ns="0" title="BIÊNIO MAIO DE 2018 – ABRIL 2020." />
      <p pageid="238" ns="0" title="Carlos Roberto Veiga Silva" />
      <p pageid="242" ns="0" title="Certificado 0000 - FUSCA - 1974" />
      <p pageid="240" ns="0" title="Certificado 4938 - BEL AIR - 1956" />
      <p pageid="276" ns="0" title="Certificado 6336 - FUSCA - 1961" />
      <p pageid="241" ns="0" title="Certificado 8111 - FUSCA - 1968" />
      <p pageid="160" ns="0" title="Clique aqui para acessar o Álbum de fotos do evento" />
      <p pageid="144" ns="0" title="Clube do Fordinho" />
    </allpages>
  </query>
</api>