Run cargo fmt

Author: antoniosarosi

examples/returns-attr/main.rs

@@ -1,5 +1,5 @@
 //! This examples shows how the `returns` attribute works for functions and structs.
-//! 
+//!
 //! You can play with different `return` annotations to see how they change the
 //! types and the clone/deref function calls..
 
@@ -60,4 +60,4 @@ fn main() {
     // Call the salsa::tracked number function.
     let n = number(&db, input);
     eprintln!("n: {n:?}");
-}
+}