re-add missing mount_pvc arg to README

Author: mboglesby

netapp_dataops_k8s/docs/workspace_management.md

@@ -182,6 +182,7 @@ The following options/arguments are optional:
     -p, --cpu=                  Number of CPUs to reserve for JupyterLab workspace. Format: '0.5', '1', etc. If not specified, no CPUs will be reserved.
     -b, --load-balancer         Option to choose a LoadBalancer service instead of using NodePort service. If not specified, NodePort service will be utilized.
     -a, --register-with-astra   Register new workspace with Astra Control (requires Astra Control).
+    -v, --mount-pvc         Option to attach an additional existing PVC that can be mounted at a spefic path whithin the container. Format: -v/--mount-pvc=existing_pvc_name:mount_point. If not specified, no additional PVC will be attached.
 ```
 
 ##### Example Usage
@@ -632,6 +633,7 @@ Tip: Refer to the [Trident documentation](https://netapp-trident.readthedocs.io/
 def create_jupyter_lab(
     workspace_name: str,                                     # Name of new JupyterLab workspace (required).
     workspace_size: str,                                     # Size new workspace (i.e. size of backing persistent volume to be created) (required). Format: '1024Mi', '100Gi', '10Ti', etc.
+    mount_pvc: str = None,                                   # Option to attach an additional existing PVC that can be mounted at a spefic path whithin the container. Format: 'existing_pvc_name:mount_point'. If not specified, no additional PVC will be attached.
     storage_class: str = None,                               # Kubernetes StorageClass to use when provisioning backing volume for new workspace. If not specified, the default StorageClass will be used. Note: The StorageClass must be configured to use Trident or the BeeGFS CSI driver.
     load_balancer_service: bool = False,                     # Option to use a LoadBalancer instead of using NodePort service. If not specified, NodePort service will be utilized.
     namespace: str = "default",                              # Kubernetes namespace to create new workspace in. If not specified, workspace will be created in namespace "default".