chore: update deprecation notice (#2815)

* update notice

* update note

* formatting

README.md

@@ -9,9 +9,10 @@
 [crates-badge]: https://img.shields.io/crates/v/ethers.svg
 [crates-url]: https://crates.io/crates/ethers
 
-> **Warning**
-> We are deprecating ethers-rs for [alloy](https://github.com/alloy-rs). Learn how to use Alloy by [visiting the book](https://alloy.rs).
-> See [#2667](https://github.com/gakonst/ethers-rs/issues/2667) for more information on ethers-rs.
+> **Notice**
+
+> `ethers-rs` has been deprecated for [alloy](https://github.com/alloy-rs). Learn how to use Alloy by [visiting the book](https://alloy.rs).
+> See [#2667](https://github.com/gakonst/ethers-rs/issues/2667) for more information.
 
 ## Quickstart