OCPBUGS#44745 Adding missing untagResources aws permission

Author: bscott-rh

modules/installation-aws-permissions.adoc

@@ -278,6 +278,12 @@ If you use an existing VPC, your account does not require these permissions to d
 * `iam:UntagRole`
 ====
 
+.Required permissions to delete a cluster with shared instance profiles
+[%collapsible]
+====
+* `tag:UntagResources`
+====
+
 .Additional IAM and S3 permissions that are required to create manifests
 [%collapsible]
 ====