[perl6/specs] 37196f: Fix example: $/.keys list keys start from 0, not 1

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: 37196f61184830f0d928429358ec7d4aa65b2a6b
      
https://github.com/perl6/specs/commit/37196f61184830f0d928429358ec7d4aa65b2a6b
  Author: Tim Smith <tim.dolo...@gmail.com>
  Date:   2014-05-05 (Mon, 05 May 2014)

  Changed paths:
    M S05-regex.pod

  Log Message:
  -----------
  Fix example: $/.keys list keys start from 0, not 1