AWS prescriptive-guidance documentation change
Summary
Renamed file and updated content: Changed section headers from bold text to markdown headers (###), updated navigation links, removed 'AWS' before 'Regions', and changed 'Configuring the CloudWatch agent' to 'Configuring CloudWatch' in a section title.
Security assessment
Changes are editorial and structural (header formatting, link updates, minor wording tweaks). No security vulnerabilities, configurations, or features are mentioned. The credential storage reference remains unchanged without security enhancements.