Update example-airflow-incluster.yaml with kubernetes executors configuration (#523)

* Update example-airflow-incluster.yaml

With the kubernetesExecutors configuration

* Update example-airflow-incluster.yaml

Cleanup with only one end-of-file line

* Update example-airflow-incluster.yaml

Remove trailing whitespaces

* Update example-airflow-incluster.yaml

remove trailing whitespaces (again)

* Update example-airflow-incluster.yaml

Another time from another editor: remove trailing whitespaces

---------

Co-authored-by: Andrew Kenworthy <1712947+adwk67@users.noreply.github.com>

Author: PaulienVa

docs/modules/airflow/examples/example-airflow-incluster.yaml

@@ -16,15 +16,19 @@ spec:
         envOverrides:
           AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"
         replicas: 1
-  celeryExecutors:
+  schedulers:
     roleGroups:
       default:
         envOverrides:
           AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"
         replicas: 1
-  schedulers:
+  celeryExecutors:
     roleGroups:
       default:
         envOverrides:
           AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"
         replicas: 1
+# in case of using kubernetesExecutors
+#  kubernetesExecutors:
+#    envOverrides:
+#      AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"