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>
    <allredirects garcontinue="Honeycomb/Releases/1609/Running_Honeycomb|283" />
  </query-continue>
  <query>
    <pages>
      <page pageid="202" ns="0" title="CSIT/Tutorials/Vagrant" />
      <page pageid="203" ns="0" title="CSIT/Tutorials/Vagrant-osx" />
      <page pageid="252" ns="0" title="Honeycomb/Release Plans/Release Plan 16.06" />
      <page pageid="263" ns="4" title="fd io:DPDK16.07 performance" />
      <page pageid="280" ns="0" title="Honeycomb/Installing binaries from packages" />
      <page pageid="281" ns="0" title="Honeycomb/Installing from archives" />
      <page pageid="284" ns="0" title="Honeycomb/Developing Honeycomb Plugins" />
      <page pageid="489" ns="0" title="A VPP forwarder plugin" />
      <page pageid="755" ns="0" title="CSIT/csit-perf-env-tuning-ubuntu1604" />
      <page pageid="939" ns="0" title="CSIT/model" />
    </pages>
  </query>
</api>