[Perl/perl5] 15e081: [doc] Update File::stat synopsis

[Elvin Aslanov via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 15e0811d172ece0da5948cb83a0af21ba2a34569
      
https://github.com/Perl/perl5/commit/15e0811d172ece0da5948cb83a0af21ba2a34569
  Author: Elvin Aslanov <rwp.prim...@gmail.com>
  Date:   2022-08-26 (Fri, 26 Aug 2022)

  Changed paths:
    M lib/File/stat.pm

  Log Message:
  -----------
  [doc] Update File::stat synopsis

Added `my` to Synopsis for better practice.

Repository points to GH:
https://metacpan.org/pod/File::stat