It was updated from day one, we no longer use the the strapi- package syntax and all v4 packages are now under our scope:
However the readme on that page is wrong (it will be fixed once we release v4.0.1 on wednesday) So if you are trying to configure it see: strapi/packages/providers/upload-cloudinary at master · strapi/strapi · GitHub
All packages listed in our monorepo are up to date with v4: strapi/packages at master · strapi/strapi · GitHub