[Perl/perl5] ebf896: Update protoent.pm

[Elvin Aslanov via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: ebf896f437d81d28bca4f476209549776f7b40cc
      
https://github.com/Perl/perl5/commit/ebf896f437d81d28bca4f476209549776f7b40cc
  Author: Elvin Aslanov <rwp.prim...@gmail.com>
  Date:   2022-09-05 (Mon, 05 Sep 2022)

  Changed paths:
    M lib/Net/protoent.pm

  Log Message:
  -----------
  Update protoent.pm

Add `my` to synopsis.