refactor: use variable directly in the format

Author: vitorsouzaalmeida

compiler-core/src/warning.rs

@@ -1398,7 +1398,7 @@ The imported value could not be used in this module anyway."
 
             Warning::EmptyModule { path, name } => Diagnostic {
                 title: "Empty module".into(),
-                text: format!("Module '{}' contains no public definitions.", name),
+                text: format!("Module '{name}' contains no public definitions."),
                 hint: Some("Consider adding public functions, types, or constants, or removing this module.".into()),
                 level: diagnostic::Level::Warning,
                 location: Some(Location {