docs: update /api/v1/rules documentation
@@ -482,6 +482,9 @@ guarantees as the overarching API v1.
GET /api/v1/rules
```
+URL query parameters:
+- `type=alert|record`: return only the alerting rules (e.g. `type=alert`) or the recording rules (e.g. `type=record`). When the parameter is absent or empty, no filtering is done.
+
```json
$ curl http://localhost:9090/api/v1/rules
