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="Checkbox|214" />
  </query-continue>
  <query>
    <pages>
      <page pageid="609" ns="0" title="Biblioteki DLL do przelewów bankowych z progrmu Motława" />
      <page pageid="899" ns="0" title="HELP SlownikBankow" />
      <page pageid="902" ns="0" title="HELP BibliotekiBankowe" />
      <page pageid="2167" ns="0" title="HELP EFCreateError" />
      <page pageid="2176" ns="0" title="Bank Proffice.dll" />
      <page pageid="2458" ns="0" title="Bank proffice2.dll" />
      <page pageid="2750" ns="0" title="Blad przetwarzania DLL" />
      <page pageid="2751" ns="0" title="Błąd pobierania SOAP" />
      <page pageid="2908" ns="0" title="Wbk.dll" />
      <page pageid="3019" ns="0" title="Blokowanie stanowiska" />
    </pages>
  </query>
</api>