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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20170806053618" timestamp="2017-08-06T05:36:18Z" ns="0" title="Raven River" />
        <page value="20170806053630" timestamp="2017-08-06T05:36:30Z" ns="0" title="Raithos River" />
        <page value="20170806053643" timestamp="2017-08-06T05:36:43Z" ns="0" title="Shemali River" />
        <page value="20170806053705" timestamp="2017-08-06T05:37:05Z" ns="0" title="Clearbrook" />
        <page value="20170806053740" timestamp="2017-08-06T05:37:40Z" ns="0" title="Borryl Stream" />
        <page value="20170806053755" timestamp="2017-08-06T05:37:55Z" ns="0" title="Terryl Stream" />
        <page value="20170806053805" timestamp="2017-08-06T05:38:05Z" ns="0" title="Granitefall Stream" />
        <page value="20170806054047" timestamp="2017-08-06T05:40:47Z" ns="0" title="Iron Hills" />
        <page value="20170806054055" timestamp="2017-08-06T05:40:55Z" ns="0" title="Fellstones" />
        <page value="20170806055925" timestamp="2017-08-06T05:59:25Z" ns="0" title="Raven&#039;s Nest" />
      </results>
    </querypage>
  </query>
</api>