Add missing NOTE annotations in tests/ui/macros/trace-macro.rs

Author: GuillaumeGomez

tests/ui/macros/trace-macro.rs

@@ -3,4 +3,7 @@
 
 fn main() {
     println!("Hello, World!");
+    //~^ NOTE trace_macro
+    //~| NOTE expanding `println!
+    //~| NOTE to `{
 }