fix spelling error in comment
diff --git a/client_integration_test.go b/client_integration_test.go
index 3bd4ad3..a020137 100644
--- a/client_integration_test.go
+++ b/client_integration_test.go
@@ -92,7 +92,7 @@
// netPipe provides a pair of io.ReadWriteClosers connected to each other.
// The functions is identical to os.Pipe with the exception that netPipe
-// provides the Read/Close guarentees that os.File derrived pipes do not.
+// provides the Read/Close guarantees that os.File derrived pipes do not.
func netPipe(t testing.TB) (io.ReadWriteCloser, io.ReadWriteCloser) {
type result struct {
net.Conn
