[perl6/specs] 3373e7: fix typo

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: 3373e7261ace0f719c155bfc0f86668130ebe42a
      
https://github.com/perl6/specs/commit/3373e7261ace0f719c155bfc0f86668130ebe42a
  Author: Lucien Grondin <grond...@yahoo.fr>
  Date:   2015-09-14 (Mon, 14 Sep 2015)

  Changed paths:
    M S07-lists.pod

  Log Message:
  -----------
  fix typo