crypto/tls: fix typo

Change-Id: If9332bae87449c94fc14710133614fcd84d2815c
Reviewed-on: https://go-review.googlesource.com/c/161726Reviewed-by: Filippo Valsorda <filippo@golang.org>

src/crypto/tls/handshake_client_test.go

@@ -28,7 +28,7 @@ import (
 
 func init() {
 	// TLS 1.3 cipher suites preferences are not configurable and change based
-	// on the architecture. Force them to the version with AES accelleration for
+	// on the architecture. Force them to the version with AES acceleration for
 	// test consistency.
 	once.Do(initDefaultCipherSuites)
 	varDefaultCipherSuitesTLS13 = []uint16{