doc: refine inline volume example

fix

deploy/example/e2e_usage.md

@@ -134,9 +134,8 @@ blobfuse         14G   41M   13G   1% /mnt/blob
 In the above example, there is a `/mnt/blob` directory mounted as `blobfuse` filesystem.
 
 #### Option#3: Inline volume
- > only available from `v1.2.0` for blobfuse protocol (NFS protocol is not supported)
- - Create `azure-secret` with existing storage account name and key in the same namespace as pod
- > in below example, both secret and pod are in `default` namespace
+ > to avoid performance issue, use persistent volume instead of inline volume when numerous pods are accessing the same volume.
+ > in below blobfuse mount example, create `azure-secret` with existing storage account name and key in the same namespace as pod, both secret and pod are in `default` namespace
 ```console
 kubectl create secret generic azure-secret --from-literal azurestorageaccountname=NAME --from-literal azurestorageaccountkey="KEY" --type=Opaque
 ```