message: docs: fix a broken link (and minor typo) on README
  ## Motivation
  Fix a broken link for `#[instrument]`. Also, fix a minor typo (`initalized` ->
  `initialized`).
diff: @@ -169,7 +169,7 @@ pub fn shave_all(yaks: usize) -> usize {
  if let Err(ref error) = res {
  // Like spans, events can also use the field initialization shorthand.
  - // In this instance, `yak` is the field being initalized.
  + // In this instance, `yak` is the field being initialized.
  error!(yak, error = error.as_ref(), "failed to shave yak!");
  } else {
  yaks_shaved += 1;
  @@ -192,7 +192,7 @@ set the default later.
  ### In Asynchronous Code
  -To trace `async fn`s, the preferred method is using the [`#[instrument]`] attribute:
  +To trace `async fn`s, the preferred method is using the [`#[instrument]`][instrument] attribute:
  ```rust
  use tracing::{info, instrument};
  @@ -244,14 +244,14 @@ my_future
  `Future::instrument` attaches a span to the future, ensuring that the span's lifetime
  is as long as the future's.
  -Under the hood, the `#[instrument]` macro performs same the explicit span
  +Under the hood, the [`#[instrument]`][instrument] macro performs same the explicit span
  attachment that `Future::instrument` does.
  [std-future]: https://doc.rust-lang.org/stable/std/future/trait.Future.html
  [`tracing-futures`]: https://docs.rs/tracing-futures
  [closing]: https://docs.rs/tracing/latest/tracing/span/index.html#closing-spans
  [`Future::instrument`]: https://docs.rs/tracing/latest/tracing/trait.Instrument.html#method.instrument
  -[`#[instrument]`]: https://docs.rs/tracing/0.1.11/tracing/attr.instrument.html
  +[instrument]: https://docs.rs/tracing/0.1.11/tracing/attr.instrument.html
  ## Supported Rust Versions
  