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>
    <links gplcontinue="1|0|Short_Notes_on_Linux_Administration" />
  </query-continue>
  <query>
    <pages>
      <page pageid="4" ns="0" title="Emacs and slime reference" contentmodel="wikitext" pagelanguage="en" touched="2011-06-24T13:47:13Z" lastrevid="6" counter="13085" length="15275" new="" />
      <page pageid="18" ns="0" title="Install Apache and PHP to do Secure h264 Pseudo Streaming" contentmodel="wikitext" pagelanguage="en" touched="2011-11-21T15:25:58Z" lastrevid="59" counter="20104" length="3621" new="" />
      <page pageid="41" ns="0" title="RedBeanPHP Cheat Sheet" contentmodel="wikitext" pagelanguage="en" touched="2016-01-11T21:45:28Z" lastrevid="264" counter="23007" length="5346" />
      <page pageid="19" ns="0" title="Rip Video DVD that is not Finalized" contentmodel="wikitext" pagelanguage="en" touched="2012-03-29T10:43:49Z" lastrevid="69" counter="7440" length="1629" new="" />
      <page pageid="44" ns="0" title="Short Notes on AWS" contentmodel="wikitext" pagelanguage="en" touched="2020-05-20T16:56:35Z" lastrevid="348" counter="18650" length="6703" />
      <page pageid="25" ns="0" title="Short Notes on Apache" contentmodel="wikitext" pagelanguage="en" touched="2014-03-14T08:49:59Z" lastrevid="244" counter="14803" length="9270" />
      <page pageid="24" ns="0" title="Short Notes on Bash" contentmodel="wikitext" pagelanguage="en" touched="2013-10-28T01:58:21Z" lastrevid="206" counter="8592" length="1285" />
      <page pageid="21" ns="0" title="Short Notes on C/C++" contentmodel="wikitext" pagelanguage="en" touched="2014-03-05T14:06:20Z" lastrevid="241" counter="15615" length="8096" />
      <page pageid="45" ns="0" title="Short Notes on Flask and Flask-RestPlus" contentmodel="wikitext" pagelanguage="en" touched="2019-09-04T07:20:33Z" lastrevid="310" counter="5803" length="1152" />
      <page pageid="47" ns="0" title="Short Notes on JS" contentmodel="wikitext" pagelanguage="en" touched="2020-12-11T20:12:38Z" lastrevid="357" counter="5039" length="2209" />
    </pages>
  </query>
</api>