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>
    <allredirects>
      <r fromid="412" ns="0" title="CVXPY--- Convex Programming tools by Prof. Dr. Stephen Boyd" />
      <r fromid="411" ns="0" title="CVXPY --- Convex Programming tools by Prof. Dr. Stephen Boyd" />
      <r fromid="390" ns="0" title="FOSS4G UK Online 2020 Slides and Recordings now available from Open Source Geospatial Foundation’s UK Chapter OSGeo" />
      <r fromid="419" ns="0" title="Hamilton-Jacobi-Bellman-Isaacs equations in Hilbert spaces with applications in decision making under uncertainty --- Prof. Dr. A. N. Yannacopoulos" />
      <r fromid="451" ns="0" title="HelpAge – COVID-19, Displacement &amp; Older People in Afghanistan - by Samuel Hall" />
      <r fromid="388" ns="0" title="IFLA June 2020 Newsletter: The International Federation of Library Associations and Institutions --- Library Services to Multicultural Populations" />
      <r fromid="354" ns="0" title="Information Media and Migration - Channels, Content and Culture" />
      <r fromid="358" ns="0" title="Solving a Robust Capacitated Arc Routing Problem using a Hybrid Simulated Annealing Algorithm: A Waste Collection Application" />
    </allredirects>
  </query>
</api>