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>
    <allredirects garcontinue="Bane_ore|8501" />
  </query-continue>
  <query>
    <pages>
      <page pageid="715" ns="0" title="Baby blue dragon" />
      <page pageid="3808" ns="0" title="Baby dragon" />
      <page pageid="4900" ns="0" title="Bgs" />
      <page pageid="4968" ns="0" title="Corp baby" />
      <page pageid="5456" ns="0" title="Baby corp" />
      <page pageid="6464" ns="0" title="Bandos plate armour" />
      <page pageid="7650" ns="0" title="Bgb" />
      <page pageid="8472" ns="0" title="Basiliskbane ore" />
      <page pageid="8484" ns="0" title="Wallasalkibane ore" />
      <page pageid="8491" ns="0" title="Abyssalbane ore" />
    </pages>
  </query>
</api>