feat(edition_2021): clippy rustdocs

.rusty-hook.toml

@@ -1,5 +1,5 @@
 [hooks]
-pre-commit = "cargo fmt --all --verbose && markdownlint-cli2 --config .markdownlint.json *.md && codespell -L crate -w src/*.rs *.md LICENSE *.toml && cargo test && cargo clippy"
+pre-commit = "cargo fmt --all --verbose && markdownlint-cli2 --config .markdownlint.json *.md && codespell -L crate -w src/*.rs *.md LICENSE *.toml && cargo test && cargo clippy --workspace --all-targets --verbose --all-features"
 
 [logging]
 verbose = true

examples/simple.rs

@@ -18,7 +18,6 @@ use no_color::*;
 /// ## The following code is executed in the simple example
 ///
 /// ```rust
-/// fn main() {
 ///   println!(
 ///     "Environment variable NO_COLOR {0} found. Now do something.",
 ///     {
@@ -29,7 +28,6 @@ use no_color::*;
 ///         }
 ///     }
 ///   );
-/// }
 /// ```
 fn main() {
     println!(

src/lib.rs

@@ -28,8 +28,8 @@
 //!
 //! or use cargo add:
 //!
-//! ```
-//! cargo add no_color
+//! ```sh
+//! $ cargo add no_color
 //! ```
 use std::env;