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="SANE" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="CUPS printer sharing (Русский)" missing="" />
      <page ns="0" title="Daemon" missing="" />
      <page ns="0" title="Daemons (Русский)" missing="" />
      <page ns="0" title="GNOME (Русский)" missing="" />
      <page ns="0" title="KDE" missing="" />
      <page ns="0" title="List of applications/Multimedia (Русский)" missing="" />
      <page ns="0" title="Official repositories (Русский)" missing="" />
      <page ns="0" title="Pacman (Русский)" missing="" />
      <page pageid="135" ns="0" title="File Meta. Добавление мета-данных (например поля Комментарий) к свойствам файла" />
      <page pageid="113" ns="0" title="NAPS2" />
    </pages>
  </query>
</api>