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="1" ns="0" title="Main Page">
        <revisions>
          <rev user="Nickh1417" timestamp="2014-10-24T00:46:47Z" comment="/* Level Designer Pages */" />
          <rev user="Nickh1417" timestamp="2014-10-24T00:45:28Z" comment="/* Level Designer Pages */" />
          <rev user="NazmusLabs" timestamp="2014-03-22T20:43:47Z" comment="/* Game Documentation */" />
          <rev user="NazmusLabs" timestamp="2014-03-22T09:57:36Z" comment="/* Game Documentation */" />
          <rev user="NazmusLabs" timestamp="2014-03-22T09:55:49Z" comment="Added updated Documentation section; Deleted Meet the Character section, as it is part of the new documentation section; Removed old Game Documentation section and table; Made Designer Pages its own temporary section." />
        </revisions>
      </page>
    </pages>
  </query>
  <query-continue>
    <revisions rvcontinue="1102" />
  </query-continue>
</api>