Fix cargo test and a number of little cleanup bugs

packages/autofmt/tests/samples/trailing_expr.rsx

@@ -3,5 +3,5 @@ fn it_works() {
         div {
             span { "Description: ", {package.description.as_deref().unwrap_or("❌❌❌❌ missing")} }
         }
-    })
+    }
 }