`DELETE /rules/{id}/mute` — end a rule's mute now.

{  "alerting": null,  "covered_through": "string",  "created_at": "string",  "description": "string",  "enabled": true,  "id": "string",  "key": "string",  "last_run_at": "string",  "last_run_status": null,  "managed_by": "string",  "muted_until": "string",  "name": "string",  "next_run_at": "string",  "org_id": "string",  "owner_team_id": "string",  "query": null,  "schedule": "string",  "status": null,  "updated_at": "string"}