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="Edition_&amp;_Versions_-_ColdFusion|44" />
  </query-continue>
  <query>
    <pages>
      <page pageid="37" ns="0" title="Domain Registration" />
      <page pageid="39" ns="0" title="Control Panel Information" />
      <page pageid="57" ns="0" title="Domain DNS (Name Servers)" />
      <page pageid="72" ns="0" title="Billing Control Panel - Video Tutorials" />
      <page pageid="85" ns="0" title="Custom Name Servers" />
      <page pageid="86" ns="0" title="Updating Name Servers" />
      <page pageid="312" ns="0" title="SQL Server Studio" />
      <page pageid="313" ns="0" title="SQL Server Management Studio" />
      <page pageid="585" ns="0" title="Restoring Databases - MS SQL" />
      <page pageid="650" ns="0" title="DNS (Name Servers)" />
    </pages>
  </query>
</api>