[Perl/perl5] d7facc: Restore wrongly deleted pod for sv_pvutf8

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: d7facc808f155e75c17b5897933d29cf5052c5fd
      
https://github.com/Perl/perl5/commit/d7facc808f155e75c17b5897933d29cf5052c5fd
  Author: Karl Williamson <k...@cpan.org>
  Date:   2022-06-10 (Fri, 10 Jun 2022)

  Changed paths:
    M mathoms.c

  Log Message:
  -----------
  Restore wrongly deleted pod for sv_pvutf8