crypto/cipher: Fix typo in example comment

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/101510047

diff --git a/src/pkg/crypto/cipher/example_test.go b/src/pkg/crypto/cipher/example_test.go
index 373f6791be4ab9d52e5240b351aeccafd5139183..5677f6f2fe8fdc383e99e377428535dc08a09bfd 100644 (file)
--- a/src/pkg/crypto/cipher/example_test.go
+++ b/src/pkg/crypto/cipher/example_test.go
@@ -240,7 +240,7 @@ func ExampleStreamReader() {
        }
 
        // Note that this example is simplistic in that it omits any
-       // authentication of the encrypted data. It you were actually to use
+       // authentication of the encrypted data. If you were actually to use
        // StreamReader in this manner, an attacker could flip arbitrary bits in
        // the output.
 }