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"?>
    <allredirects garcontinue="Cryptocurrency" />
      <page pageid="331" ns="0" title="Backspace Generation" />
      <page pageid="196" ns="0" title="Blade Runner" />
      <page pageid="131" ns="0" title="Brain-Computer Interface" />
      <page pageid="1686" ns="0" title="Cargo Cult Programming" />
      <page pageid="1461" ns="0" title="Cargo Cult Software" />
      <page pageid="157" ns="0" title="Chorded Keyboard" />
      <page pageid="770" ns="0" title="Cities and Cyborgs: Computing and the Metropolis, 1860-2010" />
      <page pageid="1483" ns="0" title="Compulsion Loops" />
      <page pageid="699" ns="0" title="Contributing to" />
      <page pageid="469" ns="0" title="Coordinated Universal Time" />