Hi, thanks for contributing to OpenStreetMap! I've updated your change so that the object isn't considered a city park, since otherwise it would be misleading for people looking for actual parks. I'm guessing Organic Maps doesn't give you a lot of choices for feature categories. If you need more control over tagging and categories, you can make your changes on the OpenStreetMap website, or using the app "Go Map!!". If you have any questions, I highly recommend joining the OSM Community Forum (https://community.openstreetmap.org/) or any of the other local or global communities (https://openstreetmap.community/)!