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="援助系計画" />
  </query-continue>
  <query>
    <pages>
      <page pageid="185" ns="0" title="Hakoniwa R.A.の計画一覧" />
      <page pageid="433" ns="0" title="いのらSP" />
      <page pageid="308" ns="0" title="伐採" />
      <page pageid="8741" ns="0" title="周囲NHex" />
      <page pageid="8770" ns="0" title="善悪度" />
      <page pageid="8717" ns="0" title="地下" />
      <page pageid="8783" ns="0" title="天候" />
      <page pageid="36" ns="0" title="奇獣スライム" />
      <page pageid="8706" ns="0" title="宇宙ミ基地建設" />
      <page pageid="721" ns="0" title="怪獣" />
    </pages>
  </query>
</api>