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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>
    <allfileusages gafcontinue="CNH_Lakes_Year_2_Report.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="710" ns="6" title="File:CNH-L Mendeley Instructions2.pdf" />
      <page pageid="668" ns="6" title="File:CNHAuthorshipGuidelines1Sep2017.pdf" />
      <page pageid="887" ns="6" title="File:CNHAuthorshipGuidelines 20Nov2019.docx" />
      <page pageid="886" ns="6" title="File:CNHAuthorshipGuidelines 20Nov2019.pdf" />
      <page pageid="113" ns="6" title="File:CNHGraphic.jpg" />
      <page pageid="348" ns="6" title="File:CNHLakesAuthorshipGuidelines v4.0 17Jan16.pdf" />
      <page pageid="517" ns="6" title="File:CNHTeamTeleconApr1.docx" />
      <page pageid="659" ns="6" title="File:CNHYear2Agenda.pdf" />
      <page pageid="851" ns="6" title="File:CNH Authorship Memo ManagementAndTeamScience 15Oct18.docx" />
      <page pageid="701" ns="6" title="File:CNH Lakes Year 1 Report.docx" />
    </pages>
  </query>
</api>