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="Basic_Wireless_TTL|980" />
  </query-continue>
  <query>
    <pages>
      <page pageid="50" ns="0" title="MiniTT1 and FlexTT5" />
      <page pageid="59" ns="0" title="Getting Started" />
      <page pageid="76" ns="0" title="Factory Reset" />
      <page pageid="88" ns="10" title="Template:Treasure map" />
      <page pageid="101" ns="0" title="MiniTT1 and FlexTT5 Key Features" />
      <page pageid="103" ns="4" title="PocketWizard Wiki:Books/MiniTT1 and FlexTT5 Manual" />
      <page pageid="828" ns="10" title="Template:CanonQuick" />
      <page pageid="830" ns="10" title="Template:NikonQuick" />
      <page pageid="957" ns="0" title="PDF Manual" />
      <page pageid="978" ns="0" title="FlexTT6" />
    </pages>
  </query>
</api>