Remove cfg_attr and replace with a normal cfg attribute in the doctes…

…t itself

codec/src/lib.rs

@@ -43,12 +43,18 @@
 //! assert_eq!(zstr.decoded_chars().next_back(), Some('o'));
 //! # Ok::<(), Error>(())
 //! ```
+//! Encode Rust source code and embed it in your program with the [`zalgo_embed!`] proc-macro:
+//! ```
+//! # #[cfg(feature = "macro")]
+//! # {
+//! # use zalgo_codec::zalgo_embed;
+//! // This grapheme cluster was made by encoding "add(x: i32, y: i32) -> i32 {x + y}"
+//! zalgo_embed!("E͎͉͙͉̞͉͙͆̀́̈́̈́̈̀̓̒̌̀̀̓̒̉̀̍̀̓̒̀͛̀̋̀͘̚̚͘͝");
 //!
-// This ensures that `cargo test` still works if the macro feature is disabled.
-#![cfg_attr(
-    feature = "macro",
-    doc = " Encode Rust source code and embed it in your program with the [`zalgo_embed!`] proc-macro:\n ```\n # use zalgo_codec::zalgo_embed;\n // This grapheme cluster was made by encoding \"fn add(x: i32, y: i32) -> i32 {x + y}\"\n zalgo_embed!(\"E͎͉͙͉̞͉͙͆̀́̈́̈́̈̀̓̒̌̀̀̓̒̉̀̍̀̓̒̀͛̀̋̀͘̚̚͘͝\");\n\n // The `add` function is now available\n assert_eq!(add(10, 20), 30);\n ```"
-)]
+//! // The `add` function is now available
+//! assert_eq!(add(10, 20), 30);
+//! # }
+//! ```
 //!
 //! # Features
 //!