Remove unneeded ```rust from rustdoc
diff --git a/src/lib.rs b/src/lib.rs
index 3c90a8c..dc1ab0b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,7 +10,7 @@
//! Alternatively, import as `use remain::sorted;` and use `#[sorted]` as the
//! attribute.
//!
-//! ```rust
+//! ```
//! # use std::error::Error as StdError;
//! # use std::fmt::{self, Display};
//! # use std::io;
@@ -103,7 +103,7 @@
//! function body, so the attribute on match-expressions and let-statements
//! requires a nightly compiler and the following two features enabled:
//!
-//! ```rust
+//! ```
//! # const IGNORE: &str = stringify! {
//! #![feature(proc_macro_hygiene, stmt_expr_attributes)]
//! # };
@@ -114,7 +114,7 @@
//! attributes work on any rustc version 1.31+. Place this attribute on any
//! function containing `#[sorted]` to make them work on a stable compiler.
//!
-//! ```rust
+//! ```
//! # use std::fmt::{self, Display};
//! #
//! # enum Error {}
