应用: 京东
任务: 打开京东，进入“帮助中心”，查看售后服务政策
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: SWIPE