Change Debug unimplemented message per request

Author: inquisitivecrystal

core/src/fmt/mod.rs

@@ -564,7 +564,7 @@ impl Display for Arguments<'_> {
     on(
         crate_local,
         label = "`{Self}` cannot be formatted using `{{:?}}`",
-        note = "add `#[derive(Debug)]` to `{Self}` or manually implement `{Debug}` for `{Self}`"
+        note = "add `#[derive(Debug)]` to `{Self}` or manually `impl {Debug} for {Self}`"
     ),
     message = "`{Self}` doesn't implement `{Debug}`",
     label = "`{Self}` cannot be formatted using `{{:?}}` because it doesn't implement `{Debug}`"