[Perl/perl5] b1b78d: Fix trivial typos in perlguts.pod.

[Felipe Gasper via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: b1b78d72d0a45b8c802c562d35c93eaac2fec117
      
https://github.com/Perl/perl5/commit/b1b78d72d0a45b8c802c562d35c93eaac2fec117
  Author: Felipe Gasper <fel...@felipegasper.com>
  Date:   2021-01-13 (Wed, 13 Jan 2021)

  Changed paths:
    M pod/perlguts.pod

  Log Message:
  -----------
  Fix trivial typos in perlguts.pod.