[Perl/perl5] 430e49: Mention perlbug emails in issue template

[Dan Book]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 430e4945463f0764de283989a76ae44d4cb46415
      
https://github.com/Perl/perl5/commit/430e4945463f0764de283989a76ae44d4cb46415
  Author: Dan Book <gri...@grinnz.com>
  Date:   2020-02-28 (Fri, 28 Feb 2020)

  Changed paths:
    M .github/ISSUE_TEMPLATE/01-perlbug-core.md

  Log Message:
  -----------
  Mention perlbug emails in issue template