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="20191122114605|2639" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Formulário Adesão" pageid="49" revid="2524" old_revid="2517" rcid="2649" timestamp="2020-02-03T16:58:21Z" />
      <rc type="edit" ns="10" title="Predefinição:Contatos cvago" pageid="163" revid="2523" old_revid="2519" rcid="2648" timestamp="2020-02-03T14:04:19Z" />
      <rc type="edit" ns="0" title="ADESÃO NOVOS ASSOCIADOS - CONTRIBUIÇÃO ANUAL" pageid="349" revid="2522" old_revid="2521" rcid="2647" timestamp="2020-02-03T12:04:59Z" />
      <rc type="edit" ns="0" title="ADESÃO NOVOS ASSOCIADOS - CONTRIBUIÇÃO ANUAL" pageid="349" revid="2521" old_revid="2516" rcid="2646" timestamp="2020-02-03T12:03:23Z" />
      <rc type="edit" ns="0" title="Inscrição de Novos Associados do CVAGO" pageid="408" revid="2520" old_revid="2515" rcid="2645" timestamp="2020-02-03T12:02:30Z" />
      <rc type="edit" ns="10" title="Predefinição:Contatos cvago" pageid="163" revid="2519" old_revid="2478" rcid="2644" timestamp="2020-02-03T12:01:49Z" />
      <rc type="edit" ns="0" title="Prestações de Contas" pageid="410" revid="2518" old_revid="2514" rcid="2643" timestamp="2020-01-23T19:18:04Z" />
      <rc type="edit" ns="0" title="Formulário Adesão" pageid="49" revid="2517" old_revid="2507" rcid="2642" timestamp="2020-01-03T12:08:30Z" />
      <rc type="edit" ns="0" title="ADESÃO NOVOS ASSOCIADOS - CONTRIBUIÇÃO ANUAL" pageid="349" revid="2516" old_revid="2477" rcid="2641" timestamp="2020-01-03T12:01:35Z" />
      <rc type="edit" ns="0" title="Inscrição de Novos Associados do CVAGO" pageid="408" revid="2515" old_revid="2471" rcid="2640" timestamp="2020-01-03T11:36:53Z" />
    </recentchanges>
  </query>
</api>