Edit resize documentation

Author: arnaudfroidmont

README.md

@@ -47,7 +47,7 @@ So while there may be capacity available in the DC, you may not be able to grow
 
 # Cluster Network Resizing (via resize.sh)
 
-Cluster resizing refers to ability to add or remove nodes from an existing cluster network.  It only applies to nodes with RDMA RoCEv2 (aka: cluster network) NICs, so HPC clusters created using BM.HPC2.36, BM.Optimized3.36 and BM.GPU4.8.  Apart from add/remove, the resize.py script can also be used to reconfigure the nodes. 
+Cluster resizing refers to ability to add or remove nodes from an existing cluster network. Apart from add/remove, the resize.py script can also be used to reconfigure the nodes. 
 
 Resizing of HPC cluster with Cluster Network consist of 2 major sub-steps:
 - Add/Remove node (IaaS provisioning) to cluster – uses OCI Python SDK 
@@ -66,7 +66,7 @@ The resize.sh is deployed on the bastion node as part of the HPC cluster Stack d
 /opt/oci-hpc/bin/resize.sh -h
 usage: resize.sh [-h] [--compartment_ocid COMPARTMENT_OCID]
                  [--cluster_name CLUSTER_NAME] [--nodes NODES [NODES ...]]
-                 [--no_reconfigure] [--user_logging] [--force]
+                 [--no_reconfigure] [--user_logging] [--force] [--remove_unreachable]
                  [{add,remove,list,reconfigure}] [number]
 
 Script to resize the CN