Format the feature note

Author: JSorngard

README.md

@@ -103,7 +103,8 @@ and more!
 
 ## Features
 
-`fast_test`: significantly speed up primality testing by depending on [`machine-prime`](https://crates.io/crates/machine_prime). Raises the MSRV to 1.84.0.
+`fast_test`: significantly speed up primality testing by depending on [`machine-prime`](https://crates.io/crates/machine_prime).
+Raises the MSRV to 1.84.0.
 
 `serde`: derives the `Serialize` and `Deserialize` traits from [`serde`](https://crates.io/crates/serde)
 for the `Primes` struct, as well as a few others.

src/lib.rs

@@ -91,7 +91,8 @@
 //!
 //! # Features
 //!
-//! `fast_test`: Significantly speed up the [`is_prime`] function by depending on the [`machine_prime`] crate. Raises the MSRV to 1.84.0.
+//! `fast_test`: Significantly speed up the [`is_prime`] function by depending on the [`machine_prime`] crate.
+//! Raises the MSRV to 1.84.0.
 //!
 //! `serde`: derives the [`Serialize`](serde::Serialize) and [`Deserialize`](serde::Deserialize) traits from the [`serde`] crate for the [`Primes`] struct, as well as a few others.
 //! Uses the [`serde_arrays`](https://docs.rs/serde_arrays/0.1.0) crate to do this, and that crate uses the standard library.