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="Barania_Góra|823" />
      <page pageid="35" ns="0" title="Gubernia piotrkowska" />
      <page pageid="60" ns="0" title="Pszczyńskie Wolne Państwo Stanowe" />
      <page pageid="200" ns="0" title="Rzeźba górska terenu" />
      <page pageid="365" ns="0" title="Klimat (typy, rozmieszczenie)" />
      <page pageid="369" ns="0" title="Śląsk Cieszyński" />
      <page pageid="703" ns="0" title="Województwo śląskie 1922-1939" />
      <page pageid="782" ns="0" title="Dorzecze Wisły" />
      <page pageid="791" ns="0" title="Wolne Państwo Stanowe" />
      <page pageid="854" ns="0" title="Zamek w Pszczynie" />