- Fix a typo.
- Skip this test on -short on non-builders.

Change-Id: Id102eceb59451694bf92b618e02ccee6603b6852
Reviewed-on: https://go-review.googlesource.com/21113Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>