Use the traits added to the Rust 2021 Edition prelude

[rust.git] / Configurations.md

diff --git a/Configurations.md b/Configurations.md
index dc8d38267a83dc1b1393a325c8fc6c21f754a394..7afd4b5cd6a973cc061a3186730047b6c6c853ff 100644 (file)
--- a/Configurations.md
+++ b/Configurations.md
@@ -1065,7 +1065,7 @@ See also: [`tab_spaces`](#tab_spaces).
 Control the case of the letters in hexadecimal literal values
 
 - **Default value**: `Preserve`
-- **Possible values**: `Upper`, `Lower`
+- **Possible values**: `Preserve`, `Upper`, `Lower`
 - **Stable**: No (tracking issue: [#5081](https://github.com/rust-lang/rustfmt/issues/5081))
 
 ## `hide_parse_errors`