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="1460" ns="0" title="Bertrand - McFadyen - wedding" />
      <page pageid="1436" ns="0" title="Kincardine Township Con 12 Lot 16" />
      <page pageid="1446" ns="0" title="Kincardine Township Con 12 Lot 17" />
      <page pageid="1641" ns="0" title="Mariposa Township,Victoria County" />
      <page pageid="1533" ns="0" title="McIlmoyl, Nellie Blanche - I1064" />
      <page pageid="1528" ns="0" title="McIlmoyl, Weldon Ross - I5515" />
      <page pageid="1422" ns="0" title="SARLES FAMILY HISTORY" />
      <page pageid="1370" ns="0" title="Seymour Township" />
    </pages>
  </query>
</api>