Replace temporary with ephemeral in lis-csi.adoc

cr: https://code.amazon.com/reviews/CR-272319611

Author: sanjvmd

latest/ug/storage/lis-csi.adoc

@@ -10,7 +10,7 @@ include::../attributes.txt[]
 The Amazon EC2 Instance Store CSI driver manages the lifecycle of instance store NVMe storage volumes for Kubernetes. This topic explains how to install the driver as an Amazon EKS add-on and use it to provide instance storage for your containerized applications.
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-The Amazon EC2 Instance Store CSI driver is a Container Storage Interface (CSI) plugin that enables Kubernetes to use EC2 instance store volumes. Instance store volumes provide temporary block-level storage that is physically attached to the host computer. The driver manages the lifecycle of these NVMe storage volumes and makes them available as Kubernetes https://kubernetes.io/docs/concepts/storage/persistent-volumes/[persistent volumes].
+The Amazon EC2 Instance Store CSI driver is a Container Storage Interface (CSI) plugin that enables Kubernetes to use EC2 instance store volumes. Instance store volumes provide ephemeral block-level storage that is physically attached to the host computer. The driver manages the lifecycle of these NVMe storage volumes and makes them available as Kubernetes https://kubernetes.io/docs/concepts/storage/persistent-volumes/[persistent volumes].
 
 Unlike the Amazon EBS CSI driver, the Amazon EC2 Instance Store CSI driver interacts with backend NVMe devices through local Linux operations. No {aws} API calls are involved, so no IAM role is required.