[perl6/specs] b56a84: Fix typo.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: b56a8417ed0fa104626e2238b667c723591041e9
      
https://github.com/perl6/specs/commit/b56a8417ed0fa104626e2238b667c723591041e9
  Author: Bruce Gray <bruce.g...@acm.org>
  Date:   2014-01-17 (Fri, 17 Jan 2014)

  Changed paths:
    M S15-unicode.pod

  Log Message:
  -----------
  Fix typo.