Update configuration file used to produce the corporate.asciidoc file.
    
    - Previously, the render.conf file was producing corporate.xhtml
      instead of corporate.html. This update changes the render.conf file
      to produce corporate.html instead of corporate.xhtml file.
    
    - Previously, the render.conf file was using two different sections to
      produce single and chunks XHTML output in each of them. This update
      changes the render.conf file to produce both single and chunks XHTML
      output in a single configuration section.