Update comment on ssl hotname override

include/grpcpp/support/channel_arguments_impl.h

@@ -61,8 +61,8 @@ class ChannelArguments {
   void SetChannelArgs(grpc_channel_args* channel_args) const;
 
   // gRPC specific channel argument setters
-  /// Set target name override for SSL host name checking. This option is for
-  /// testing only and should never be used in production.
+  /// Set target name override for SSL host name checking. This option should
+  /// be used with caution in production.
   void SetSslTargetNameOverride(const grpc::string& name);
   // TODO(yangg) add flow control options
   /// Set the compression algorithm for the channel.