AWS prescriptive-guidance medium security documentation change
Summary
Updated service references (AppConfig->Config), security controls documentation, and deprecated service recommendations. Added links to KMS/S3 Glacier docs. Fixed typos and internal links.
Security assessment
Changed AWS AppConfig to AWS Config for compliance monitoring - directly impacts security controls implementation. Updated Amazon Glacier references to S3 Glacier to prevent use of deprecated services. Added explicit links to customer managed keys and S3 Glacier documentation, improving security guidance clarity.