Fix documentation examples

[hectorcast-db]

Changes

Split examples in workspace and account examples to avoid workspace examples showing in account services which share a name.

Tests

• [X] Generated documentation
• [X] make test run locally
• [X] make fmt applied
• [ ] relevant integration tests applied

[github-actions[bot]]

This PR breaks backwards compatibility for databrickslabs/ucx downstream. See build logs for more details.

_{Running from downstreams #178}