refactor:format code

src/lang/en.js

@@ -2,6 +2,7 @@ export default {
   route: {
     dashboard: 'Dashboard',
     introduction: 'Introduction',
+    documentation: 'Documentation',
     permission: 'Permission',
     icons: 'Icons',
     components: 'Components',

src/lang/index.js

@@ -1,10 +1,10 @@
 import Vue from 'vue'
-import elementEnLocale from 'element-ui/lib/locale/lang/en'
-import elementZhLocale from 'element-ui/lib/locale/lang/zh-CN'
-import enLocale from './en'
-import zhLocale from './zh'
 import VueI18n from 'vue-i18n'
 import Cookies from 'js-cookie'
+import elementEnLocale from 'element-ui/lib/locale/lang/en' // element-ui lang
+import elementZhLocale from 'element-ui/lib/locale/lang/zh-CN'// element-ui lang
+import enLocale from './en'
+import zhLocale from './zh'
 
 Vue.use(VueI18n)
 

src/lang/zh.js

@@ -2,6 +2,7 @@ export default {
   route: {
     dashboard: '首页',
     introduction: '简述',
+    documentation: '文档',
     permission: '权限测试页',
     icons: '图标',
     components: '组件',