Update init.go

Author: krytarowski

src/cmd/go/internal/work/init.go

@@ -47,7 +47,7 @@ func instrumentInit() {
 		platform := cfg.Goos + "/" + cfg.Goarch
 		switch platform {
 		default:
-			fmt.Fprintf(os.Stderr, "go %s: -race is only supported on linux/amd64, linux/ppc64le, freebsd/amd64, netbsd/amd64. darwin/amd64 and windows/amd64\n", flag.Args()[0])
+			fmt.Fprintf(os.Stderr, "go %s: -race is only supported on linux/amd64, linux/ppc64le, freebsd/amd64, netbsd/amd64, darwin/amd64 and windows/amd64\n", flag.Args()[0])
 			os.Exit(2)
 		case "linux/amd64", "linux/ppc64le", "freebsd/amd64", "netbsd/amd64", "darwin/amd64", "windows/amd64":
 			// race supported on these platforms