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>
    <alllinks galcontinue="COMP345_-_fall_2021" />
  </query-continue>
  <query>
    <pages>
      <page pageid="150" ns="0" title="Build-and-fix model" />
      <page pageid="53" ns="0" title="COMP248 - winter 2006" />
      <page pageid="5" ns="0" title="COMP345 - fall 2013" />
      <page pageid="240" ns="0" title="COMP345 - fall 2014" />
      <page pageid="333" ns="0" title="COMP345 - fall 2015" />
      <page pageid="375" ns="0" title="COMP345 - fall 2016" />
      <page pageid="412" ns="0" title="COMP345 - fall 2017" />
      <page pageid="482" ns="0" title="COMP345 - fall 2018" />
      <page pageid="545" ns="0" title="COMP345 - fall 2019" />
      <page pageid="625" ns="0" title="COMP345 - fall 2020" />
    </pages>
  </query>
</api>