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"?>
    <alllinks galcontinue="DG_Notes_on_20170904_Event" />
      <page ns="0" title="Bandpass Calibration" missing="" />
      <page ns="0" title="Coronal Model" missing="" />
      <page ns="0" title="Creating Magnetic Field Models" missing="" />
      <page pageid="101" ns="0" title="Basic GitHub Tutorial" />
      <page pageid="41" ns="0" title="Calibration Database" />
      <page pageid="48" ns="0" title="Calibration Overview" />
      <page pageid="83" ns="0" title="Calibrator Survey" />
      <page pageid="67" ns="0" title="Computing Systems" />
      <page pageid="78" ns="0" title="Control Commands" />
      <page pageid="9" ns="0" title="Create CASA measurement sets" />