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="BEAD_and_other_hashtags|288" />
  </query-continue>
  <query>
    <pages>
      <page pageid="4" ns="0" title="SLT Members&#039; Pages" />
      <page pageid="2075" ns="0" title="Under Milk Wood (1972)" />
      <page pageid="2191" ns="0" title="Noah (1972)" />
      <page pageid="2277" ns="0" title="My Three Angels (1972)" />
      <page pageid="2586" ns="0" title="Harlequinade (1973)" />
      <page pageid="2707" ns="0" title="Make Me an Offer (1973)" />
      <page pageid="2909" ns="0" title="Separate Tables (1974)" />
      <page pageid="4470" ns="0" title="Bim Harding" />
      <page pageid="15172" ns="0" title="The Ladykillers (2019)" />
      <page pageid="15353" ns="0" title="Lear (2019)" />
    </pages>
  </query>
</api>