Context Map diagram issue

As title, I tried to use the Context Map to understand this project about every bounded context.

But I'm not sure this is correct. Please review this at your available time. Thanks.

The legend descriptions are as follows:

- The "U" is the upstream, and the "D" is the downstream.
- The "OHS" is the Open Host Service.
- The "ACL" is the `Anti-corruption layer`.
- The "CF" is the `conformist`.

Once we've confirmed the context map, I think it's great to add this diagram in the `README.md`.