[perl6/specs] db4354: update perl version example to use 6.c type vers

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: db43544188b774d1fe51d85a9293b1190503bb2b
      
https://github.com/perl6/specs/commit/db43544188b774d1fe51d85a9293b1190503bb2b
  Author: Steve Mynott <steve.myn...@gmail.com>
  Date:   2016-01-23 (Sat, 23 Jan 2016)

  Changed paths:
    M S22-package-format.pod

  Log Message:
  -----------
  update perl version example to use 6.c type vers