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="Colour_profile|6010" />
  </query-continue>
  <query>
    <pages>
      <page pageid="891" ns="0" title="Biosupgrade" />
      <page pageid="1114" ns="6" title="File:Icon20 bluetooth.png" />
      <page pageid="1466" ns="0" title="Bluetooth" />
      <page pageid="2141" ns="6" title="File:Icon20 browsekeys.png" />
      <page pageid="3600" ns="6" title="File:Icon20 chips.png" />
      <page pageid="5183" ns="0" title="BIOS Upgrade:Creating a Bootable CD from a Floppy Image" />
      <page pageid="5611" ns="0" title="Bootup sidux 2008-03 (Ουρέα) on a IdeaPad S9" />
      <page pageid="6171" ns="0" title="ThinkPad Bluetooth with Enhanced Data Rate (BDC-2.1)" />
      <page pageid="7071" ns="0" title="ThinkPad Bluetooth with Enhanced Data Rate (BDC-2)" />
      <page pageid="7464" ns="0" title="ThinkPad Bluetooth Daughter Card with Enhanced Data Rate (BDC-2)" />
    </pages>
  </query>
</api>