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>
    <allpages gapcontinue="НТСсофт-WIKI" />
  </query-continue>
  <query>
    <pages>
      <page pageid="17" ns="0" title="Заглавная страница" contentmodel="wikitext" pagelanguage="ru" touched="2014-10-29T09:36:36Z" lastrevid="71" counter="3339" length="55" redirect="" new="" />
      <page pageid="25" ns="0" title="Изготовление СКП на рабочем месте заявителя." contentmodel="wikitext" pagelanguage="ru" touched="2014-10-24T06:29:21Z" lastrevid="944" counter="26094" length="2226" />
      <page pageid="262" ns="0" title="Изготовление СКП через утилиту «Мастер получения сертификата в УЦ НТСсофт»" contentmodel="wikitext" pagelanguage="ru" touched="2020-06-23T05:36:48Z" lastrevid="983" counter="16635" length="1384" />
      <page pageid="204" ns="0" title="Каким образом внести изменения в ДТ?" contentmodel="wikitext" pagelanguage="ru" touched="2014-07-10T03:37:47Z" lastrevid="516" counter="2324" length="684" />
    </pages>
  </query>
</api>