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="20141119131242" timestamp="2014-11-19T13:12:42Z" ns="0" title="Base de conhecimentos" />
        <page value="20141121172638" timestamp="2014-11-21T17:26:38Z" ns="0" title="Manual de uso dessa ferramenta" />
        <page value="20141121173931" timestamp="2014-11-21T17:39:31Z" ns="0" title="Develop" />
        <page value="20141121175142" timestamp="2014-11-21T17:51:42Z" ns="0" title="Ordens de Serviço" />
        <page value="20141121175229" timestamp="2014-11-21T17:52:29Z" ns="0" title="Responsável Técnico" />
        <page value="20141201162448" timestamp="2014-12-01T16:24:48Z" ns="0" title="Cadastro de Pessoas" />
        <page value="20141202124340" timestamp="2014-12-02T12:43:40Z" ns="0" title="Teste imagem" />
        <page value="20141202124750" timestamp="2014-12-02T12:47:50Z" ns="0" title="Princípios de funcionamento do Cadastro de Pessoas" />
        <page value="20141202183326" timestamp="2014-12-02T18:33:26Z" ns="0" title="Aba Plano de Saúde Tabela" />
        <page value="20141202183722" timestamp="2014-12-02T18:37:22Z" ns="0" title="Aba Plano de Saúde TISS" />
      </results>
    </querypage>
  </query>
</api>