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|List_of_Lists" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="2019-20" missing="" contentmodel="wikitext" pagelanguage="en" />
      <page ns="0" title="2020-21" missing="" contentmodel="wikitext" pagelanguage="en" />
      <page pageid="1434" ns="0" title="Administration" contentmodel="wikitext" pagelanguage="en" touched="2020-05-29T14:36:07Z" lastrevid="12833" counter="102347" length="7516" />
      <page pageid="2462" ns="0" title="Beginner&#039;s Guide to the Wiki" contentmodel="wikitext" pagelanguage="en" touched="2011-10-13T23:10:50Z" lastrevid="10949" counter="27404" length="4760" />
      <page pageid="1560" ns="0" title="Education" contentmodel="wikitext" pagelanguage="en" touched="2011-10-04T16:08:46Z" lastrevid="9981" counter="35110" length="4261" />
      <page pageid="2044" ns="0" title="Education Commander" contentmodel="wikitext" pagelanguage="en" touched="2017-04-05T21:00:46Z" lastrevid="10204" counter="12308" length="1338" />
      <page pageid="3646" ns="0" title="Featured Articles" contentmodel="wikitext" pagelanguage="en" touched="2020-05-31T02:38:55Z" lastrevid="13022" counter="985" length="39" redirect="" />
      <page pageid="3677" ns="0" title="Getting Connected" contentmodel="wikitext" pagelanguage="en" touched="2021-08-28T04:48:40Z" lastrevid="13544" counter="5728" length="2079" />
      <page pageid="1445" ns="0" title="Habitat Systems" contentmodel="wikitext" pagelanguage="en" touched="2010-06-10T23:00:42Z" lastrevid="9965" counter="52663" length="7603" />
      <page pageid="3564" ns="0" title="Jamie Tait-Glossop" contentmodel="wikitext" pagelanguage="en" touched="2020-06-05T16:17:10Z" lastrevid="13326" counter="33828" length="7741" />
    </pages>
  </query>
</api>