Update Cargo.toml

DJMcNab · JohnTitor · web-flow · commit a735e2158001 · 2021-03-10T07:16:31.000Z
Co-authored-by: Yuki Okushi &lt;huyuumi.dev@gmail.com&gt;
diff --git a/Cargo.toml b/Cargo.toml
@@ -25,5 +25,6 @@ serde_json = "1.0.64"
 quickcheck = "1.0"
 
 [package.metadata.rust-analyzer]
-# This crate uses #[feature(rustc_private)]
+# This crate uses `#![feature(rustc_private)]`
+# cf. https://github.com/rust-analyzer/rust-analyzer/pull/7891
 rustc_private = true
