docs: small vsphere docs fixes (#9796)

* docs: fix storageClassName in PersistentVolume

* docs: minor typo fix and formatting

* docs: fix proper STORAGECLASS in example prompt

docs/vsphere-csi.md

@@ -55,7 +55,7 @@ spec:
   resources:
     requests:
       storage: 1Gi
-  storageClassName: Space-Efficient
+  storageClassName: mongodb-sc
 
 ---
 apiVersion: v1
@@ -87,7 +87,7 @@ You should see the PVC provisioned and bound:
 ```ShellSession
 $ kubectl get pvc
 NAME              STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
-csi-pvc-vsphere   Bound    pvc-dc7b1d21-ee41-45e1-98d9-e877cc1533ac   1Gi        RWO            Space-Efficient   10s
+csi-pvc-vsphere   Bound    pvc-dc7b1d21-ee41-45e1-98d9-e877cc1533ac   1Gi        RWO            mongodb-sc     10s
 ```
 
 And the volume mounted to the Nginx Pod (wait until the Pod is Running):

docs/vsphere.md

@@ -21,7 +21,7 @@ After this step you should have:
 
 ### Kubespray configuration
 
-First in `inventory/sample/group_vars/all/all.yml` you must set the cloud provider to `external` and external_cloud_provider to `external_cloud_provider`.
+First in `inventory/sample/group_vars/all/all.yml` you must set the `cloud_provider` to `external` and `external_cloud_provider` to `vsphere`.
 
 ```yml
 cloud_provider:  "external"