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="Акиндин_Борисов" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1882" ns="0" title="Ёлкинская старообрядческая церковь во имя святого пророка Илии Фезвитянина" touched="2014-07-08T01:42:03Z" lastrevid="5493" counter="5368" length="3881" />
      <page pageid="11" ns="0" title="Аввакум Петров" touched="2016-04-20T04:25:00Z" lastrevid="9130" counter="111027" length="12752" />
      <page pageid="1246" ns="0" title="Авраам преподобный и Лот племянник его" touched="2014-07-30T04:50:37Z" lastrevid="6477" counter="1627" length="3772" />
      <page pageid="1182" ns="0" title="Азбука первопечатника Иоанна Федорова" touched="2015-04-10T13:37:30Z" lastrevid="6775" counter="10487" length="7256" />
    </pages>
  </query>
</api>