Update EFS CSI Driver taint feature version info in docs

Author: mskanth972

docs/README.md

@@ -159,7 +159,7 @@ Since Amazon EFS is an elastic file system, it doesn't really enforce any file s
 + Take note of the resource quotas for Amazon EFS. For example, there's a quota of 1000 access points that can be created for each Amazon EFS file system. For more information, see [https://docs.aws.amazon.com/efs/latest/ug/limits.html#limits-efs-resources-per-account-per-region](https://docs.aws.amazon.com/efs/latest/ug/limits.html#limits-efs-resources-per-account-per-region).
 
 ### Configure node startup taint
-There are potential race conditions on node startup (especially when a node is first joining the cluster) where pods/processes that rely on the EFS CSI Driver can act on a node before the EFS CSI Driver is able to startup up and become fully ready. To combat this, the EFS CSI Driver contains a feature to automatically remove a taint from the node on startup. Users can taint their nodes when they join the cluster and/or on startup, to prevent other pods from running and/or being scheduled on the node prior to the EFS CSI Driver becoming ready.
+There are potential race conditions on node startup (especially when a node is first joining the cluster) where pods/processes that rely on the EFS CSI Driver can act on a node before the EFS CSI Driver is able to startup up and become fully ready. To combat this, the EFS CSI Driver contains a feature to automatically remove a taint from the node on startup. This feature was introduced from version v1.7.2 of the EFS CSI Driver and version v2.5.2 of its Helm chart. Users can taint their nodes when they join the cluster and/or on startup, to prevent other pods from running and/or being scheduled on the node prior to the EFS CSI Driver becoming ready.
 
 This feature is activated by default, and cluster administrators should use the taint `efs.csi.aws.com/agent-not-ready:NoExecute` (any effect will work, but `NoExecute` is recommended). For example, EKS Managed Node Groups [support automatically tainting nodes](https://docs.aws.amazon.com/eks/latest/userguide/node-taints-managed-node-groups.html).