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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20180322181251" timestamp="2018-03-22T18:12:51Z" ns="0" title="Erro durante a instalação automática do sistema de gravação" />
        <page value="20180322182858" timestamp="2018-03-22T18:28:58Z" ns="0" title="Como instalar manualmente o sistema de gravação" />
        <page value="20180326114130" timestamp="2018-03-26T11:41:30Z" ns="0" title="Como alterar o IP dos módulos" />
        <page value="20180327111426" timestamp="2018-03-27T11:14:26Z" ns="0" title="Linha XR" />
        <page value="20180327112124" timestamp="2018-03-27T11:21:24Z" ns="0" title="Não encontro a Placa Gerenciadora na rede" />
        <page value="20180327112741" timestamp="2018-03-27T11:27:41Z" ns="0" title="Como alterar o IP da Placa Gerenciadora" />
        <page value="20180407182631" timestamp="2018-04-07T18:26:31Z" ns="0" title="Erro 1001 ao desinstalar ou instalar o software MG-Soft" />
        <page value="20180521142302" timestamp="2018-05-21T14:23:02Z" ns="0" title="Erro ao reproduzir o áudio pelo player do MG-Soft Web" />
        <page value="20180521142732" timestamp="2018-05-21T14:27:32Z" ns="0" title="Não está gravando" />
        <page value="20180523162454" timestamp="2018-05-23T16:24:54Z" ns="0" title="Equipamento em reparo" />
      </results>
    </querypage>
  </query>
</api>