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="Bylaws_legacy_Wiki_version" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Breadboards" missing="" />
      <page pageid="35065" ns="0" title="Beginning Raspberry Pi, Arduino, and Electronics" />
      <page pageid="34833" ns="0" title="Beginning Raspberry Pi, Arduino, and Friends" />
      <page pageid="34788" ns="0" title="BigCNC" />
      <page pageid="752" ns="0" title="Biohacking" />
      <page pageid="897" ns="0" title="Blender 3D Modelling and Animation" />
      <page pageid="35037" ns="0" title="Board Agendas" />
      <page pageid="7" ns="0" title="Board of Directors" />
      <page pageid="5" ns="0" title="Bylaws" />
      <page pageid="20" ns="0" title="Bylaws Draft" />
    </pages>
  </query>
</api>