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="حمد_الريّح|151" />
  </query-continue>
  <query>
    <allredirects>
      <r ns="0" title="أودّع كيف" />
      <r ns="0" title="احمد ربشة" />
      <r ns="0" title="احمد شاويش" />
      <r ns="0" title="التيجاني حاج موسى" />
      <r ns="0" title="الحلنقي" />
      <r ns="0" title="الشفيع" />
      <r ns="0" title="الطيّب عبد الله" />
      <r ns="0" title="العاقب محمّد الحسن" />
      <r ns="0" title="المصير (عثمان حسين)" />
      <r ns="0" title="ترباس" />
    </allredirects>
  </query>
</api>