Fix typo in comment (inherited from ICC spec)

Bug: skia:
Change-Id: I23192464011a1846810003981f109d9162dc646a
Reviewed-on: https://skia-review.googlesource.com/105620
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed