Update decommission markdown (#379)

* update decommission-markdown

* update decommission-markdown

---------

Co-authored-by: dwara001 <dwara001@iebcloud.csvd.census.gov>

aws/documentation/account-decommission/decommission.md

@@ -9,6 +9,7 @@ This assumes that all VPC-provisioned resources have been removed.
 * Pre-check
 
 - [ ] Validate approval to remove account
+   >  This document describes prerequisite steps before decommissing an AWS account. [here](https://github.e.it.census.gov/terraform/support/tree/master/docs/how-to/account-decommissioning).
 - [ ] Destroy VPC provisioned resources
 
 * Actitivities
@@ -30,7 +31,7 @@ This assumes that all VPC-provisioned resources have been removed.
 
 # Step 1: Remove SSO Access
 
-Check that the account has no user-based sso configuration.  In each managemement account for the respective organization, ent-ew, and one of ent-gov or lab-gov, 
+Check that the account has no user-based sso configuration.  In each managemement account for the respective organization, ent-ew(109223337795-censusaws), and one of ent-gov(252903981224-ma5-gov) or lab-gov(243219719746-lab-gov-management-nonprod), 
 look for instances of the account alias and the account id.
 
 ```script