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 gafcontinue="Chocoface.jpg|1" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1386" ns="0" title="House paint colors" />
      <page pageid="1556" ns="0" title="1983 Mercedes maintenance" />
      <page pageid="1559" ns="0" title="Toyota maintenance" />
      <page pageid="1640" ns="0" title="Camera" />
      <page pageid="1693" ns="0" title="Caesar" />
      <page pageid="1902" ns="0" title="Broken hinge on kitchen cabinet" />
      <page pageid="1943" ns="0" title="Dish washer" />
      <page pageid="1982" ns="0" title="Church wifi" />
      <page pageid="2018" ns="0" title="Bunch bike battery will not insert" />
    </pages>
  </query>
</api>