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>
    <allredirects garcontinue="Carlos_André_Eyer" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2555" ns="0" title="Bernardo Carvalho" />
      <page pageid="2161" ns="0" title="Bernardo Magalhães" />
      <page pageid="2444" ns="0" title="Beto Lima" />
      <page pageid="1687" ns="0" title="Binder/FC+G" />
      <page pageid="1849" ns="0" title="Bruno Di Célio" />
      <page pageid="1954" ns="0" title="Bruno Perpétuo" />
      <page pageid="2003" ns="0" title="Bruno Prósperi" />
      <page pageid="1825" ns="0" title="Bárbara Carauta" />
      <page pageid="2396" ns="0" title="CGCOM" />
      <page pageid="2405" ns="0" title="Caio Abréia" />
    </pages>
  </query>
</api>