Use instead.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/iam/update-role-description.html
| aws iam update-role-description --role-name role-name --description description |
| Amazon EMR - AWS Documentation - Amazon.com - PDF Free Download : http://propertibazar.com/article/amazon-emr-aws-documentation-amazoncom_5a8ee05dd64ab267429cd4b3.html |