update pv

Author: network-charles

content/en/docs/concepts/storage/persistent-volumes.md

@@ -818,6 +818,12 @@ storage with specific access modes.
 Claims use [the same convention as volumes](#volume-mode) to indicate the
 consumption of the volume as either a filesystem or block device.
 
+### Volume Name
+
+Claims use this to explicitly bind to a specific PersistentVolume. 
+If the specified PV is already bound to another PVC, the binding will be stuck
+in a pending state.
+
 ### Resources
 
 Claims, like Pods, can request specific quantities of a resource. In this case,