[perl6/specs] fa5d12: add entry for argument

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: fa5d12420a7a0a1f246687650486df2af65f9cd2
      
https://github.com/perl6/specs/commit/fa5d12420a7a0a1f246687650486df2af65f9cd2
  Author: L. Grondin <grond...@yahoo.fr>
  Date:   2014-09-19 (Fri, 19 Sep 2014)

  Changed paths:
    M S99-glossary.pod

  Log Message:
  -----------
  add entry for argument