os: fix typo in test
Change-Id: Ib445940f0f24385dde1b62277c8083e6369d0645
GitHub-Last-Rev:
02c18c27773e966145e379933e4e01d4531e7ec3
GitHub-Pull-Request: golang/go#66503
Reviewed-on: https://go-review.googlesource.com/c/go/+/574016
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>