address review comments

Author: arshadd-b

docs/book/src/topics/powervs/creating-a-cluster.md

@@ -199,4 +199,5 @@ following the steps below.
 - IBMPOWERVS_NETWORK_NAME : The name of the network. Refer [here](/topics/capibmadm/powervs/network#3-capibmadm-powervs-network-list) how to get the network details.
 - [IBMPOWERVS_REGION](/reference/regions-zones-mapping.html)
 - [IBMPOWERVS_ZONE](/reference/regions-zones-mapping.html)
+- IBM_RESOURCE_GROUP : Go to Manage > Account > Account resources > Resource groups in the console to get the resource group Name.
 - COS_BUCKET_REGION, COS_BUCKET_NAME and COS_OBJECT_NAME : Refer [here](/machine-images/powervs#powervs-images-with-dhcp-based-network) to get the COS details.

docs/book/src/topics/vpc/creating-a-cluster.md

@@ -127,7 +127,7 @@ There are two following variables for controlling the volume size for the boot d
 - IBMVPC_CLUSTER_CLASS_NAME : Name of the cluster that user provides.
 - [IBMVPC_REGION](/reference/regions-zones-mapping.html)
 - [IBMVPC_ZONE](/reference/regions-zones-mapping.html)
-- IBMVPC_RESOURCEGROUP : Go to Manage > Account > Account resources > Resource groups in the console to get reource group details.
+- IBMVPC_RESOURCEGROUP : Go to Manage > Account > Account resources > Resource groups in the console to get the resource group ID.
 - IBMVPC_IMAGE_NAME : Name of the custom image. Refer [here](/topics/capibmadm/vpc/image#1-capibmadm-vpc-image-list)
 - [IBMVPC_PROFILE](https://cloud.ibm.com/docs/vpc?topic=vpc-profiles&interface=cli)
 - IBMVPC_SSHKEY_NAME : Name of the SSH Key. Refer [here](/topics/capibmadm/vpc/key#1-capibmadm-vpc-key-list) how to get the keys.