Fix 2

Author: rodrimati1992

src/lib.rs

@@ -25,7 +25,9 @@
 //! This demonstrates how one can write a polymorphic `const fn`
 //! (as of 2025-07-20, trait methods can't be called in const fns on stable)
 //! 
-//! ```rust
+//! (this example requires Rust 1.61.0, since it uses trait bounds in const)
+#![cfg_attr(not(feature = "rust_1_61"), doc = "```ignore")]
+#![cfg_attr(feature = "rust_1_61", doc = "```rust")]
 //! use typewit::{HasTypeWitness, TypeEq};
 //! 
 //! const VALS: [&str; 6] = [