AWS durable-functions documentation change
Summary
Documentation file was moved from core/steps.md to sdk-reference/operations/step.md and updated with new navigation structure, breadcrumbs, and links to reflect reorganization of the AWS Durable Execution SDK documentation.
Security assessment
The changes are purely structural and navigational, involving file relocation, updated navigation menus, breadcrumbs, and link paths. No security-related content, vulnerabilities, or security features were added, modified, or mentioned in the diff. The changes appear to be part of a documentation reorganization effort.