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="PUBG部" />
  </query-continue>
  <query>
    <pages>
      <page pageid="488" ns="0" title="Blender部メモ" />
      <page pageid="473" ns="0" title="CPUベンチマークテスト（動画エンコード）" />
      <page pageid="342" ns="0" title="DeskTopMusic部" />
      <page pageid="471" ns="0" title="FFMPEGメモ" />
      <page pageid="150" ns="0" title="HDDの話" />
      <page pageid="141" ns="0" title="JUNKWIKI" />
      <page pageid="183" ns="0" title="JUNK WIKI:免責事項" />
      <page pageid="461" ns="0" title="OCについて" />
      <page pageid="149" ns="0" title="PC用電源OEM元" />
      <page pageid="4" ns="0" title="PC用電源OEM元&amp;神小話" />
    </pages>
  </query>
</api>