Add editor service documentation to the list of the APIs

[odinuv]

https://keboola.atlassian.net/browse/AJDA-1188

follow up to https://github.com/keboola/api-service/pull/73

Release Notes Plan:
Documentation update adding Editor API to the list of available Keboola APIs, including its regional endpoints across all supported cloud providers (AWS, GCP, Azure).

For Customer Communication:
Developers will now find Editor Service API documentation properly listed in the API overview page alongside other Keboola services. No functional changes to existing APIs or services.

Impact Analysis:
Zero impact on existing functionality - this is purely a documentation update that makes the Editor API visible to developers browsing the API reference page. Also includes cleanup of deprecated docker-compose version field.

Change Type:
Documentation enhancement - adding missing API service reference and updating service endpoint table.

Justification:
Editor Service has been deployed and operational but was missing from the developer documentation. This follows up on related api-service changes.

Deployment Plan:
Standard CI/CD pipeline deploys documentation updates automatically upon merge to main branch.

Rollback Plan:
Git revert to previous commit if documentation issues are discovered post-deployment.

Post Release:
Verify Editor API documentation links are accessible and correctly formatted on the live developers docs site.

Support Plan:
No support impact expected - documentation-only change with no API or service modifications.