cmd/compilebench: fix package name in comment
cmd/compilebench: fix package name in comment

Change-Id: Ie5c413fc9f13cf029d8d8a6cae5754838c834395
Reviewed-on: https://go-review.googlesource.com/40170
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

syreclabs/go-tools,syreclabs/go-tools,syreclabs/go-tools,golang/tools,syreclabs/go-tools,golang/tools,golang/tools,golang/tools,golang/tools,syreclabs/go-tools,syreclabs/go-tools