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>
    <alllinks galcontinue="Blender|2548" />
  </query-continue>
  <query>
    <pages>
      <page pageid="965" ns="0" title="Main ContribExamples" />
      <page pageid="1015" ns="0" title="Main ContribOther" />
      <page pageid="1105" ns="0" title="Contrib/PyFoam/benchFoam" />
      <page pageid="1480" ns="0" title="How to add temperature to icoFoam" />
      <page pageid="1486" ns="0" title="IcoHeatFoam Blasius Flat-Plate Flow Benchmark" />
      <page pageid="1609" ns="3" title="User talk:Niklas" />
      <page pageid="1827" ns="0" title="TestBgschaid/Semantic" />
      <page pageid="1855" ns="0" title="Benchmark ercoftac urf2-02" />
      <page pageid="2111" ns="0" title="GUI" />
      <page pageid="2414" ns="1" title="Talk:Contrib/SwiftBlock" />
    </pages>
  </query>
</api>