test: minor changes

test/lib/meta_plugin_std/types.h

@@ -16,7 +16,7 @@ struct custom_type_hash;
     {}
 
 template<typename Type>
-struct entt::type_seq<Type> {
+struct entt::type_hash<Type> {
     static constexpr entt::id_type value() ENTT_NOEXCEPT {
         return custom_type_hash<Type>::value;
     }