add missing permission (#2720)

* add missing permission

* fix typo

* remove duplicate line

Author: gcagle3

docs/2.0/docs/accountfactory/guides/drift-remediation-with-async-module.md

@@ -175,7 +175,8 @@ For `_envcommon/landingzone/root-pipelines-plan-role.hcl`, ensure that you have
      actions   = [
        "states:List*",
        "states:Describe*",
-       "states:GetExecutionHistory"
+       "states:GetExecutionHistory",
+       "states:ValidateStateMachineDefinition"
      ]
      effect    = "Allow"
    }

docs/2.0/docs/accountfactory/tutorials/modify-account.md

@@ -29,9 +29,6 @@ The table below lists common AWS account operations and provides guidance on whe
 | Update account admin user in Account Access IAM Identity Center                                                               | ✅ (recommended) | ✅ (discouraged)       |
 | Granting additional users access to accounts in AWS IAM Identity Center                                                       | ✅ (recommended) | ✅ (discouraged)       |
 
-| Granting additional users access to accounts in AWS IAM Identity Center                                                       | ✅ (recommended) | ✅ (discouraged)       |
-
-
 ### Updating the account through the new AWS account request file
 
 You can update specific attributes of an AWS account by modifying the corresponding account request file in the `_new_account_requests` directory. Follow the steps below to update specific attributes: