docs: fix Rust Style Guide links

Author: karolzwolak

Configurations.md

@@ -2747,7 +2747,7 @@ See also [`max_width`](#max_width) and [`use_small_heuristics`](#use_small_heuri
 
 ## `style_edition`
 
-Controls the edition of the [Rust Style Guide] to use for formatting ([RFC 3338])
+Controls the edition of the [Rust Style Guide](https://doc.rust-lang.org/nightly/style-guide/editions.html?highlight=editions#rust-style-editions) to use for formatting ([RFC 3338])
 
 - **Default value**: `"2015"`
 - **Possible values**: `"2015"`, `"2018"`, `"2021"`, `"2024"` (unstable variant)

README.md

@@ -183,7 +183,7 @@ edition = "2024"
 
 ### Style Editions
 
-The option `style_edition` controls the edition of the [Rust Style Guide] to use for formatting ([RFC 3338])
+The option `style_edition` controls the edition of the [Rust Style Guide](https://doc.rust-lang.org/nightly/style-guide/editions.html?highlight=editions#rust-style-editions) to use for formatting ([RFC 3338](https://rust-lang.github.io/rfcs/3338-style-evolution.html))
 It is inferred from `edition` if not explicitly set, and defaults to the `2015` edition.
 
 Starting with the 2024 edition, Rust introduced changes to default formatting. This can lead to inconsistencies between `rustfmt` and `cargo fmt` if the edition is not explicitly configured. This is because `cargo fmt` automatically picks up the edition from `Cargo.toml`, while `rustfmt` defaults to the `2015` edition unless otherwise specified.