docs(scroll-nav): add options prop

document/components/docs/en-US/scroll-nav.md

@@ -146,6 +146,7 @@ ScrollNav component. You can use it to sticky your navigation bar and content.
 | side | If set to `true` then the navigation bar will be at the side position | Boolean | true/false | false |
 | current | the default navigation value(label of panel) | String/Number | - | '' |
 | speed | speed of navigating to target panel | Number | - | 300 |
+| options | the options of better-scroll, you could find details at [BS Document](https://ustbhuangyi.github.io/better-scroll/doc/en/options.html) | Object | - | {} |
 
 #### CubeScrollNavPanel
 

document/components/docs/zh-CN/scroll-nav.md

@@ -146,6 +146,7 @@
 | side | 是否是侧边样式 | Boolean | true/false | false |
 | current | 当前导航 active 项的 key 值 | String/Number | - | '' |
 | speed | 点击导航切换到指定位置的速度 | Number | - | 300 |
+| options | better-scroll 配置项，具体请参考[BS 官方文档](https://ustbhuangyi.github.io/better-scroll/doc/zh-hans/options.html) | Object | - | {} |
 
 #### CubeScrollNavPanel