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>
    <allfileusages afcontinue="Bahri-profile.png" />
  </query-continue>
  <query>
    <allfileusages>
      <f ns="6" title="File:BAMF-HQ 1.jpg" />
      <f ns="6" title="File:BAMF-HQ 2.jpg" />
      <f ns="6" title="File:BAMF-Headquarter 1.jpg" />
      <f ns="6" title="File:BAMF-Headquarter 2.jpg" />
      <f ns="6" title="File:Background-digital-studios.png" />
      <f ns="6" title="File:Bad news I&#039;m back 02.jpg" />
      <f ns="6" title="File:Bad news I&#039;m back After Completion.jpg" />
      <f ns="6" title="File:Bad news I&#039;m back Completion.jpg" />
      <f ns="6" title="File:Bad news I&#039;m back How to get there.jpg" />
      <f ns="6" title="File:Bad news I&#039;m back Start 01.jpg" />
    </allfileusages>
  </query>
</api>