Missing: Pod/Simple/Subclassing.pod

[douglasdd]

• Core Modules index-P (https://perldoc.perl.org/index-modules-P.html) is missing Pod::Simple::Subclassing
• it should be generated from https://github.com/perl-pod/pod-simple/blob/master/lib/Pod/Simple/Subclassing.pod
  • (*.pod, not a *.pm <- probably the bug)
• Links from https://perldoc.perl.org/Pod/Simple.html to Pod::Simple::Subclassing are broken
  • they 404 at https://perldoc.perl.org/Pod/Simple/Subclassing.html
  • and Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request

[Grinnz]

This may be similar to #22 and #28. The source pod is correct and is rendered properly by https://perldoc.pl/Pod::Simple::Subclassing.