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 arcontinue="宇宙ミ基地建設|8707" />
  </query-continue>
  <query>
    <allredirects>
      <r fromid="1125" ns="0" title="Hakoniwa R.A.の計画一覧" />
      <r fromid="8673" ns="0" title="いのらSP" />
      <r fromid="8715" ns="0" title="伐採" />
      <r fromid="8742" ns="0" title="周囲NHex" />
      <r fromid="8743" ns="0" title="周囲NHex" />
      <r fromid="8744" ns="0" title="周囲NHex" />
      <r fromid="8767" ns="0" title="善悪度" />
      <r fromid="8718" ns="0" title="地下" />
      <r fromid="8784" ns="0" title="天候" />
      <r fromid="1927" ns="0" title="奇獣スライム" />
    </allredirects>
  </query>
</api>