Fix new clippy lints

crates/salsa/salsa-macros/src/database_storage.rs

@@ -1,4 +1,5 @@
-//!
+//! Implementation for `[salsa::database]` decorator.
+
 use heck::ToSnakeCase;
 use proc_macro::TokenStream;
 use syn::parse::{Parse, ParseStream};

crates/salsa/salsa-macros/src/parenthesized.rs

@@ -1,4 +1,4 @@
-//!
+//! Parenthesis helper
 pub(crate) struct Parenthesized<T>(pub(crate) T);
 
 impl<T> syn::parse::Parse for Parenthesized<T>

crates/salsa/salsa-macros/src/query_group.rs

@@ -1,4 +1,4 @@
-//!
+//! Implementation for `[salsa::query_group]` decorator.
 
 use crate::parenthesized::Parenthesized;
 use heck::ToUpperCamelCase;