"tid":1788,
    "title":"尾款支付提醒",
    "refCnt":6,
    "keywordList":{
        "list":[
            {
                "kid":1,
                "name":"商品名称",
                "example":"《孩子的敏感期，教养的关键期》每一个敏感期来临 ",
                "content":"{{thing1.DATA}}",
                "rule":"thing",
                "createtime":1573119473,
                "creator":"v_chujianli"
            },
            {
                "kid":2,
                "name":"时间期限",
                "example":"2018-8-8",
                "content":"{{time2.DATA}}",
                "rule":"time",
                "createtime":1573119473,
                "creator":"v_chujianli"
            },
            {
                "kid":3,
                "name":"温馨提示",
                "example":"请尽快完成支付剩余货款哦~",
                "content":"{{thing3.DATA}}",
                "rule":"thing",
                "createtime":1573119473,
                "creator":"v_chujianli"
            }
        ]
    },

我在这个小程序中，想把时间期限改变成thing，告知我已有字段，但是没看到有删除关键字的相关按钮？

想咨询下微信如何操作才能删除已有关键字，加上新的关键字