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="Абдоменальная_пластика|987" />
  </query-continue>
  <query>
    <pages>
      <page pageid="563" ns="0" title="Сурджидерм" />
      <page pageid="895" ns="0" title="Пластика живота" />
      <page pageid="972" ns="0" title="BH Clinic" />
      <page pageid="1331" ns="0" title="Soprano" />
      <page pageid="1619" ns="0" title="Косметика Доктор Кадир" />
      <page pageid="1632" ns="0" title="Dr. Kadir" />
      <page pageid="2340" ns="0" title="Трансобтураторный слинг" />
      <page pageid="2344" ns="0" title="TVT" />
      <page pageid="2386" ns="0" title="Foar-form терапия" />
      <page pageid="2578" ns="0" title="Bellcontour® Gvisc" />
    </pages>
  </query>
</api>