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="CDC_Health_Risk_Assessments|91" />
  </query-continue>
  <query>
    <pages>
      <page pageid="67" ns="0" title="Determinants" />
      <page pageid="73" ns="0" title="Psychosocial Determinants" />
      <page pageid="75" ns="0" title="Patient Barriers" />
      <page pageid="85" ns="0" title="Patient Assessments" />
      <page pageid="87" ns="0" title="Q1" />
      <page pageid="88" ns="0" title="Q2" />
      <page pageid="89" ns="0" title="Q4" />
      <page pageid="90" ns="0" title="Q7" />
      <page pageid="191" ns="0" title="Growth &amp; Value Strategies" />
      <page pageid="248" ns="0" title="Healthcare Analytics and AI" />
    </pages>
  </query>
</api>