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docs(zh): remove extra space #3090

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2 changes: 1 addition & 1 deletion docs/zh/guide/advanced/navigation-guards.md
Original file line number Diff line number Diff line change
Expand Up @@ -130,7 +130,7 @@ beforeRouteUpdate (to, from, next) {
这个离开守卫通常用来禁止用户在还未保存修改前突然离开。该导航可以通过 `next(false)` 来取消。

```js
beforeRouteLeave (to, from , next) {
beforeRouteLeave (to, from, next) {
const answer = window.confirm('Do you really want to leave? you have unsaved changes!')
if (answer) {
next()
Expand Down