应用: 笔记
任务: 打开笔记，将清单项目‘买牛奶’设为已完成
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: STOP