REST API - Edit request and response docs content

doc/api/access_requests.md

doc/api/alert_management_alerts.md

doc/api/audit_events.md

doc/api/boards.md

doc/api/branches.md

doc/api/cluster_agents.md

doc/api/commits.md

doc/api/container_registry.md

doc/api/dependencies.md

doc/api/dependency_proxy.md

doc/api/deploy_keys.md

doc/api/deploy_tokens.md

doc/api/deployments.md

doc/api/discussions.md

doc/api/dora/metrics.md

doc/api/draft_notes.md

doc/api/emoji_reactions.md

doc/api/environments.md

doc/api/epic_issues.md

doc/api/epic_links.md