all: fix some comments

Change-Id: I8a332489815651067a36c84690db9c6cb540882e
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/465998
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
3 files changed