message: Fix jsonrpc typos.
diff: @@ -476,7 +476,7 @@ function _createMessageConnection(messageReader: MessageReader, messageWriter: M
  let callback: DataCallback = (message) => {
  try {
  - // We have recevied a cancellation message. Check if the message is still in the queue
  + // We have received a cancellation message. Check if the message is still in the queue
  // and cancel it if allowed to do so.
  if (isNotificationMessage(message) && message.method === CancelNotification.type.method) {
  let key = createRequestQueueKey((message.params as CancelParams).id);
  