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="Cryptonite|11" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5" ns="0" title="Account tree" />
      <page pageid="25" ns="0" title="Account tree pruning" />
      <page pageid="7" ns="0" title="Coinbase account" />
      <page pageid="8" ns="0" title="Cryptonite" />
      <page pageid="9" ns="0" title="Cryptonite API" />
      <page pageid="10" ns="0" title="Cycle time" />
      <page pageid="14" ns="0" title="Inversion database" />
      <page pageid="1" ns="0" title="Main Page" />
      <page pageid="22" ns="0" title="Network synchronization" />
      <page pageid="26" ns="0" title="Transactions" />
    </pages>
  </query>
</api>