Update CHANGELOG.md

Author: hanwen-pcluste

CHANGELOG.md

@@ -25,6 +25,7 @@ CHANGELOG
 **CHANGES**
 - Avoid duplication of nodes seen by `clustermgtd` if compute nodes are added to multiple Slurm partitions.
 - ParallelCluster AMI for US isolated regions are now vended with preconfigured CA certificates to speed up node bootstrap.
+- Replace `nvidia-persistenced` service with `parallelcluster_nvidia` service to avoid conflicts with DLAMI.
 
 **BUG FIXES**
 - Remove hardcoding of root volume device name (`/dev/sda1` and `/dev/xvda`) and retrieve it from the AMI(s) used during `create-cluster`.