Update ryu links to zmij

Author: dtolnay

README.md

@@ -10,11 +10,11 @@ This crate provides a fast conversion of integer primitives to decimal strings.
 The implementation comes straight from [libcore] but avoids the performance
 penalty of going through [`core::fmt::Formatter`].
 
-See also [`ryu`] for printing floating point primitives.
+See also [`zmij`] for printing floating point primitives.
 
 [libcore]: https://github.com/rust-lang/rust/blob/1.92.0/library/core/src/fmt/num.rs#L190-L253
 [`core::fmt::Formatter`]: https://doc.rust-lang.org/std/fmt/struct.Formatter.html
-[`ryu`]: https://github.com/dtolnay/ryu
+[`zmij`]: https://github.com/dtolnay/zmij
 
 ```toml
 [dependencies]

src/lib.rs

@@ -10,10 +10,10 @@
 //! strings. The implementation comes straight from [libcore] but avoids the
 //! performance penalty of going through [`core::fmt::Formatter`].
 //!
-//! See also [`ryu`] for printing floating point primitives.
+//! See also [`zmij`] for printing floating point primitives.
 //!
 //! [libcore]: https://github.com/rust-lang/rust/blob/1.92.0/library/core/src/fmt/num.rs#L190-L253
-//! [`ryu`]: https://github.com/dtolnay/ryu
+//! [`zmij`]: https://github.com/dtolnay/zmij
 //!
 //! # Example
 //!