[Doc] fix nav

docs/markdown/en-US/area.md

@@ -84,7 +84,7 @@ Example of `AreaList`
 
 All code of China: [Area.json](https://github.com/youzan/vant/blob/dev/docs/demos/mock/area.json)
 
-#### argument of callback function `confirm`
+#### argument of callback function confirm
 An array contains selected area objects.
 
 `code` - code of selected area, `name` - name of selected area

docs/src/doc.config.js

@@ -524,7 +524,7 @@ module.exports = {
               },
               {
                 path: '/area',
-                title: 'Area (In translation)'
+                title: 'Area'
               },
               {
                 path: '/contact',
@@ -544,7 +544,7 @@ module.exports = {
               },
               {
                 path: '/sku',
-                title: 'Sku (In translation)'
+                title: 'Sku'
               }
             ]
           }