message: appender: fixed typo in tracing-appender README example
  ## Motivation
  Found a typo as code didn't work as is.
  ## Solution
  Fixed the typo :)
diff: @@ -112,7 +112,7 @@ a [`std::io::Write`][write]:
  ```rust
  fn main() {
  - let (non_blocking, _guard) = tracing_appender::non_blocking(std::io::Stdout);
  + let (non_blocking, _guard) = tracing_appender::non_blocking(std::io::stdout());
  tracing_subscriber::fmt()
  .with_writer(non_blocking)
  .init();
  