[Perl/perl5] 45f87e: warnings.pm - Clarify scoping of $^W examples

[Dan Book]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 45f87e658628cd0ee4595d39ffbf774a44c72a1f
      
https://github.com/Perl/perl5/commit/45f87e658628cd0ee4595d39ffbf774a44c72a1f
  Author: Dan Book <gri...@grinnz.com>
  Date:   2020-04-01 (Wed, 01 Apr 2020)

  Changed paths:
    M lib/warnings.pm
    M regen/warnings.pl

  Log Message:
  -----------
  warnings.pm - Clarify scoping of $^W examples