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="Ресурсное_месторождение|1896" />
  </query-continue>
  <query>
    <pages>
      <page pageid="6" ns="0" title="ГОРОДА и их виды и бонусы" />
      <page pageid="10" ns="0" title="АРТЕФАКТЫ" />
      <page pageid="461" ns="0" title="Кладовой" />
      <page pageid="1641" ns="0" title="2" />
      <page pageid="1861" ns="0" title="Дед Мороз" />
      <page pageid="1862" ns="0" title="Стрельба Охотника" />
      <page pageid="2463" ns="0" title="Hut" />
      <page pageid="2465" ns="0" title="Artefacts for Nanban" />
      <page pageid="2475" ns="0" title="Temporary lokations" />
      <page pageid="2489" ns="0" title="Kinds of the cities" />
    </pages>
  </query>
</api>