net/http: fix typo in comment

Change-Id: Ibb21c12bf67b2648eb7606bee8ec1b54e6c70dd5
Reviewed-on: https://go-review.googlesource.com/115237Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>

src/net/http/socks_bundle.go

@@ -231,7 +231,7 @@ const (
 
 	socksAuthMethodNotRequired         socksAuthMethod = 0x00 // no authentication required
 	socksAuthMethodUsernamePassword    socksAuthMethod = 0x02 // use username/password
-	socksAuthMethodNoAcceptableMethods socksAuthMethod = 0xff // no acceptable authetication methods
+	socksAuthMethodNoAcceptableMethods socksAuthMethod = 0xff // no acceptable authentication methods
 
 	socksStatusSucceeded socksReply = 0x00
 )