[perl6/specs] b02fdf: fix minor typos

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: b02fdfafca4555c3b86bdabc27f4518829e825b8
      
https://github.com/perl6/specs/commit/b02fdfafca4555c3b86bdabc27f4518829e825b8
  Author: Steve Mynott <steve.myn...@gmail.com>
  Date:   2015-08-11 (Tue, 11 Aug 2015)

  Changed paths:
    M S14-roles-and-parametric-types.pod
    M S99-glossary.pod

  Log Message:
  -----------
  fix minor typos