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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>
    <recentchanges rccontinue="2020-01-07T21:50:30Z|35854" />
  </query-continue>
  <query>
    <recentchanges>
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      <rc type="log" ns="6" title="File:FortiMail Personal Quarantine User Guide.pdf" rcid="35863" pageid="24833" revid="0" old_revid="0" timestamp="2020-03-12T17:44:43Z" />
      <rc type="edit" ns="0" title="MySmartOffice guides" rcid="35862" pageid="25626" revid="35512" old_revid="35483" timestamp="2020-01-07T21:59:08Z" />
      <rc type="log" ns="0" title="Logging in after two-factor authentication has been setup" rcid="35861" pageid="26154" revid="0" old_revid="0" timestamp="2020-01-07T21:56:52Z" />
      <rc type="new" ns="0" title="Logging in after two-factor authentication has been setup" rcid="35860" pageid="26154" revid="35510" old_revid="0" timestamp="2020-01-07T21:56:10Z" />
      <rc type="log" ns="0" title="Setting up a two-factor authenticator application for mobile devices" rcid="35859" pageid="26151" revid="0" old_revid="0" timestamp="2020-01-07T21:53:53Z" />
      <rc type="log" ns="0" title="Setting up a two-factor Authenticator application for mobile devices" rcid="35858" pageid="26153" revid="0" old_revid="0" timestamp="2020-01-07T21:53:53Z" />
      <rc type="log" ns="0" title="Setting up a two-factor Authenticator application for mobile devices" rcid="35857" pageid="26151" revid="0" old_revid="0" timestamp="2020-01-07T21:53:13Z" />
      <rc type="log" ns="0" title="Two-factor Authenticator application for mobile devices" rcid="35856" pageid="26152" revid="0" old_revid="0" timestamp="2020-01-07T21:53:13Z" />
      <rc type="edit" ns="0" title="Two-factor Authenticator application for mobile devices" rcid="35855" pageid="26151" revid="35505" old_revid="35504" timestamp="2020-01-07T21:51:04Z" />
    </recentchanges>
  </query>
</api>