message: Fix formatting of Rustdoc
diff: @@ -12,10 +12,18 @@ use syn::ItemFn;
  /// Procedural attribute macro. This is meant to be applied to a binary's async
  /// `main()`, transforming into a function that returns a type acceptable for
  /// `main()`. In other words, this will not compile with libtock-rs:
  -/// async fn main() {}
  +/// ```ignore
  +/// async fn main() {
  +/// // async code
  +/// }
  +/// ```
  /// and this will:
  +/// ```ignore
  /// #[libtock::main]
  -/// async fn main() {}
  +/// async fn main() {
  +/// // async code
  +/// }
  +/// ```
  #[proc_macro_attribute]
  pub fn main(_: TokenStream, input: TokenStream) -> TokenStream {
  generate_main_wrapped(input.into()).into()
  