[Perl/perl5] 8e8b6c: add 'isa' operator to perlexperiment

[Renee]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 8e8b6c176c61bf1f98cdb674b05090a9bec5ab03
      
https://github.com/Perl/perl5/commit/8e8b6c176c61bf1f98cdb674b05090a9bec5ab03
  Author: reneeb <i...@perl-services.de>
  Date:   2020-07-22 (Wed, 22 Jul 2020)

  Changed paths:
    M pod/perlexperiment.pod

  Log Message:
  -----------
  add 'isa' operator to perlexperiment