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>
    <pages>
      <page pageid="206993" ns="0" title="Main Page">
        <redirects>
          <rd pageid="2337" ns="0" title="New Main Page" />
          <rd pageid="21222" ns="0" title="Main Page/en" />
          <rd pageid="195484" ns="0" title="Mainpage" />
          <rd pageid="203965" ns="0" title="Joanmariatrack" />
          <rd pageid="203999" ns="0" title="Vipre Antivirus technical support 18442408386 vipre activation updatation product key error" />
          <rd pageid="204009" ns="0" title="Router support @1 866-362-8280@ netgear customer service phone number, Netgear Router support phone number" />
          <rd pageid="204164" ns="2" title="User:Wowdone Resident" />
        </redirects>
      </page>
    </pages>
  </query>
</api>