os/exec: fix typo in documentation

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5797073

diff --git a/src/pkg/os/exec/exec.go b/src/pkg/os/exec/exec.go
index ebe92a9fba39344c24c2c4350bc5870da6ed9413..bbd04902b742d289a806f86aff7dc54ddbe8a34d 100644 (file)
--- a/src/pkg/os/exec/exec.go
+++ b/src/pkg/os/exec/exec.go
@@ -59,7 +59,7 @@ type Cmd struct {
        // If either is nil, Run connects the corresponding file descriptor
        // to the null device (os.DevNull).
        //
-       // If Stdout and Stderr are are the same writer, at most one
+       // If Stdout and Stderr are the same writer, at most one
        // goroutine at a time will call Write.
        Stdout io.Writer
        Stderr io.Writer