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="Barbara_Maj/zdjęcia" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Barbara Krasińska" missing="" />
      <page pageid="9234" ns="0" title="BAKO Agencja Artystyczno-Reklamowa" />
      <page pageid="2922" ns="0" title="BRODA" />
      <page pageid="1092" ns="0" title="Babilon Tour" />
      <page pageid="17077" ns="0" title="Babski Kabaret" />
      <page pageid="1372" ns="0" title="Bajki dla potłuczonych" />
      <page pageid="1179" ns="0" title="Bajki nie tylko dla dzieci" />
      <page pageid="667" ns="0" title="Barbara Gołaska" />
      <page pageid="684" ns="0" title="Barbara Krafftówna" />
      <page pageid="519" ns="0" title="Barbara Maj" />
    </pages>
  </query>
</api>