format command args consistently

Author: razvan

stacks/jupyterhub-pyspark-hdfs/jupyterlab.yaml

@@ -41,11 +41,10 @@ spec:
         - name: download-notebook
           image: oci.stackable.tech/stackable/spark-connect-client:3.5.7-stackable0.0.0-dev
           command:
-            [
-              "sh",
-              "-c",
-              "curl https://raw.githubusercontent.com/stackabletech/demos/main/stacks/jupyterhub-pyspark-hdfs/notebook.ipynb -o /notebook/notebook.ipynb",
-            ]
+            - bash
+          args:
+            - -c
+            - curl https://raw.githubusercontent.com/stackabletech/demos/main/stacks/jupyterhub-pyspark-hdfs/notebook.ipynb -o /notebook/notebook.ipynb
           volumeMounts:
             - mountPath: /notebook
               name: notebook