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="Dreamwidth_Scratch_Installation" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Codepaths needing testing: Obsolete" missing="" />
      <page pageid="90" ns="0" title="Bugzilla" />
      <page pageid="512" ns="0" title="Cap and flag documentation" />
      <page pageid="199" ns="0" title="Committing Guidelines" />
      <page pageid="148" ns="0" title="Contributor Licensing Agreement" />
      <page pageid="1008" ns="0" title="Database Table Overview" />
      <page pageid="32" ns="0" title="Directory Structure" />
      <page pageid="1025" ns="0" title="Dreamhack Getting Started" />
      <page pageid="1026" ns="0" title="Dreamhack Troubleshooting" />
      <page pageid="530" ns="0" title="Dreamhacks" />
    </pages>
  </query>
</api>