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>
    <general mainpage="Заглавная страница" base="https://wiki.sukhoi.ru:80/index.php?title=%D0%97%D0%B0%D0%B3%D0%BB%D0%B0%D0%B2%D0%BD%D0%B0%D1%8F_%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%B8%D1%86%D0%B0" sitename="АвиаВики" logo="http://wiki.sukhoi.ru/sukhoi_logo_wiki.png" generator="MediaWiki 1.23.17" phpversion="5.3.29" phpsapi="cgi-fcgi" dbtype="mysql" dbversion="5.5.5-10.1.48-MariaDB-1~bionic" imagewhitelistenabled="" langconversion="" titleconversion="" linkprefixcharset="" linkprefix="" linktrail="/^([a-zабвгдеёжзийклмнопрстуфхцчшщъыьэюя]+)(.*)$/sDu" case="first-letter" lang="ru" fallback8bitEncoding="windows-1251" writeapi="" timezone="Europe/Moscow" timeoffset="180" articlepath="/index.php?title=$1" scriptpath="" script="/index.php" server="https://wiki.sukhoi.ru:80" wikiid="wikidb-wiki" time="2024-11-25T02:16:20Z" maxuploadsize="104857600" minuploadchunksize="1024" favicon="https://wiki.sukhoi.ru:80/favicon.ico">
      <fallback>
        <lang code="en" />
      </fallback>
      <thumblimits>
        <limit>120</limit>
        <limit>150</limit>
        <limit>180</limit>
        <limit>200</limit>
        <limit>250</limit>
        <limit>300</limit>
      </thumblimits>
      <imagelimits>
        <limit width="320" height="240" />
        <limit width="640" height="480" />
        <limit width="800" height="600" />
        <limit width="1024" height="768" />
        <limit width="1280" height="1024" />
      </imagelimits>
    </general>
    <namespaces>
      <ns id="-2" case="first-letter" canonical="Media" xml:space="preserve">Медиа</ns>
      <ns id="-1" case="first-letter" canonical="Special" xml:space="preserve">Служебная</ns>
      <ns id="0" case="first-letter" content="" xml:space="preserve" />
      <ns id="1" case="first-letter" subpages="" canonical="Talk" xml:space="preserve">Обсуждение</ns>
      <ns id="2" case="first-letter" subpages="" canonical="User" xml:space="preserve">Участник</ns>
      <ns id="3" case="first-letter" subpages="" canonical="User talk" xml:space="preserve">Обсуждение участника</ns>
      <ns id="4" case="first-letter" subpages="" canonical="Project" xml:space="preserve">АвиаВики</ns>
      <ns id="5" case="first-letter" subpages="" canonical="Project talk" xml:space="preserve">Обсуждение АвиаВики</ns>
      <ns id="6" case="first-letter" canonical="File" xml:space="preserve">Файл</ns>
      <ns id="7" case="first-letter" subpages="" canonical="File talk" xml:space="preserve">Обсуждение файла</ns>
      <ns id="8" case="first-letter" subpages="" canonical="MediaWiki" xml:space="preserve">MediaWiki</ns>
      <ns id="9" case="first-letter" subpages="" canonical="MediaWiki talk" xml:space="preserve">Обсуждение MediaWiki</ns>
      <ns id="10" case="first-letter" canonical="Template" xml:space="preserve">Шаблон</ns>
      <ns id="11" case="first-letter" subpages="" canonical="Template talk" xml:space="preserve">Обсуждение шаблона</ns>
      <ns id="12" case="first-letter" subpages="" canonical="Help" xml:space="preserve">Справка</ns>
      <ns id="13" case="first-letter" subpages="" canonical="Help talk" xml:space="preserve">Обсуждение справки</ns>
      <ns id="14" case="first-letter" canonical="Category" xml:space="preserve">Категория</ns>
      <ns id="15" case="first-letter" subpages="" canonical="Category talk" xml:space="preserve">Обсуждение категории</ns>
    </namespaces>
    <namespacealiases>
      <ns id="2" xml:space="preserve">Участница</ns>
      <ns id="3" xml:space="preserve">Обсуждение участницы</ns>
      <ns id="6" xml:space="preserve">Image</ns>
      <ns id="6" xml:space="preserve">Изображение</ns>
      <ns id="7" xml:space="preserve">Image talk</ns>
      <ns id="7" xml:space="preserve">Обсуждение изображения</ns>
    </namespacealiases>
    <statistics pages="1176" articles="335" views="2067150" edits="8278" images="490" users="2557" activeusers="0" admins="5" jobs="0" />
  </query>
</api>