fix env var names (#584)

Author: maltesander

docs/modules/airflow/examples/example-airflow-kubernetes-executor-s3-logging.yaml

@@ -8,10 +8,10 @@ spec:
   clusterConfig: {}
   webservers:
     envOverrides: &s3-logging-env-overrides
-      AIRFLOW_LOGGING_REMOTE_LOGGING: "True"
-      AIRFLOW_LOGGING_REMOTE_BASE_LOG_FOLDER: s3://<bucket-name>/airflow-task-logs/
+      AIRFLOW__LOGGING__REMOTE_LOGGING: "True"
+      AIRFLOW__LOGGING__REMOTE_BASE_LOG_FOLDER: s3://<bucket-name>/airflow-task-logs/
       # The name / connection ID created in the Airflow Web UI
-      AIRFLOW_LOGGING_REMOTE_LOG_CONN_ID: minio
+      AIRFLOW__LOGGING__REMOTE_LOG_CONN_ID: minio
     roleGroups:
       default:
         replicas: 1