Docs: fix a typos

[lauson-oo]

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[Moca-H]

vue.runtime.esm.js?2b0e:619 [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "placement"

[RiluoKK]

请问下楼主这个问题解决了吗？还是说要等官方合并代码呢？如果已经解决的，可以告知下解决方案吗？

[Moca-H]

之前解决报错是回退了饿了么版本 2.15.6。就没有报错了 你可以试试