This commit simplifies the output filenames for the templates in the `bmad-wechat-mini-game-dev` expansion pack, as requested by the user.
The following templates have been updated:
- `game-brief-tmpl.yaml` now outputs `docs/brief.md`.
- `prd-tmpl.yaml` now outputs `docs/prd.md`.
- `game-design-doc-tmpl.yaml` now outputs `docs/gdd.md`.
- `game-architecture-tmpl.yaml` now outputs `docs/architecture.md`.
This change makes the filenames more direct and predictable.
google-labs-jules[bot]
Zhang Jing