[3.13.1] Fix changelog

Author: Himani Anil Deshpande

CHANGELOG.md

@@ -15,9 +15,11 @@ This file is used to list changes made in each version of the AWS ParallelCluste
   - Libfabric-aws: libfabric-aws-2.1.0-1
   - Rdma-core: rdma-core-57.0-1
   - Open MPI: openmpi40-aws-4.1.7-2 and openmpi50-aws-5.0.6
+- Upgrade amazon-efs-utils to version 2.3.1 (from v2.1.0) for non-Amazon Linux AMI's.
+
 
 **BUG FIXES**
-- Upgrade amazon-efs-utils to version 2.3.1 (from v2.1.0) for non-Amazon Linux AMI's.
+- Fix an issue where we were not installing Pyxis if NVIDIA is already installed.
 
 3.13.0
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