fix: to prop of n-a don't support object

demo/documentation/components/typography/enUS/index.md

@@ -46,7 +46,7 @@ text
 ### A Props
 |Name|Type|Default|Description|
 |-|-|-|-|
-|to|`string`|`null`|If the prop is set, it will be rendered as a Vue Router `router-link`s component. Make sure you don't want to use `href` attr.|
+|to|`string \| Object`|`null`|If the prop is set, it will be rendered as a Vue Router `router-link`s component. Make sure you don't want to use `href` attr.|
 
 ### Ul, Ol Props
 |Name|Type|Default|Description|

demo/documentation/components/typography/zhCN/index.md

@@ -45,7 +45,7 @@ text
 ### A Props
 |名称|类型|默认值|说明|
 |-|-|-|-|
-|to|`string`|`null`|如果设定了 to prop，a 会被渲染为一个 Vue Router 的 `router-link` 标签。确保你想用的不是 href 属性|
+|to|`string \| Object`|`null`|如果设定了 to prop，a 会被渲染为一个 Vue Router 的 `router-link` 标签。确保你想用的不是 href 属性|
 
 ### Ul, Ol Props
 |名称|类型|默认值|说明|

src/Typography/src/a.vue

@@ -27,7 +27,7 @@ export default {
   mixins: [ withapp, themeable ],
   props: {
     to: {
-      type: String,
+      type: [String, Object],
       default: null
     }
   }