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>
    <alllinks galcontinue="Bellcontour®_Gvisc|238" />
  </query-continue>
  <query>
    <pages>
      <page pageid="56" ns="0" title="Мезотерапия" />
      <page pageid="57" ns="0" title="Контурная пластика" />
      <page pageid="58" ns="0" title="Ботулинотерапия" />
      <page pageid="76" ns="0" title="Удаление морщин" />
      <page pageid="77" ns="0" title="Ботокс" />
      <page pageid="78" ns="0" title="Диспорт" />
      <page pageid="184" ns="0" title="Кочергина Ольга Викторовна" />
      <page pageid="972" ns="0" title="BH Clinic" />
      <page pageid="2457" ns="0" title="Ступин Вячеслав Владимирович" />
      <page pageid="2578" ns="0" title="Bellcontour® Gvisc" />
    </pages>
  </query>
</api>