Clarify resource configuration for Superset #421
Description
The example YAML shown in the Superset operator documentation for resource configuration (https://docs.stackable.tech/home/nightly/superset/usage-guide/storage-resource-configuration) is a generic example and doesn't show how to configure memory and CPU requests when deploying Superset. We should improve the documentation for this, including an example Superset CR showing where the parameters need to be set to correctly configure resource requests/limits.