cmd/bench: quick fix for go test argument in goTestSubrepo

Change-Id: If96a795816f885e970e5b11809656efdadbb6d1c
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/458916
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Dylan Le <dungtuanle@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
1 file changed