chore: element-ui语言设置为中文

plugins/element-ui.js

 import Vue from 'vue'
 import Element from 'element-ui'
-import locale from 'element-ui/lib/locale/lang/en'
 import VueForm from '@ezijing/vue-form'
 
-Vue.use(Element, { locale })
+Vue.use(Element)
 Vue.use(VueForm)