docs(image-preview): zIndex prop version

document/components/docs/en-US/image-preview.md

@@ -96,7 +96,7 @@ __Notice:__ Cause this component used create-api, so you should read [create-api
 | initial-index | initial index | Number | - | 0 |
 | loop | whether to loop swipe | Boolean | true/false | true |
 | speed | speed of switching pages, ms | Number | - | 400 |
-| zIndex<sup>1.9.6</sup> | the value of the style z-index | Number | - | 100 |
+| zIndex<sup>1.10.11</sup> | the value of the style z-index | Number | - | 100 |
 
 ### Slots
 

document/components/docs/zh-CN/image-preview.md

@@ -90,7 +90,7 @@ __注：__ 由于此组件基于 create-api 实现，所以在使用之前，请
 | initial-index | 初始索引 | Number | - | 0 |
 | loop | 是否可循环 | Boolean | true/false | true |
 | speed | 轮播速度，单位 ms | Number | - | 400 |
-| zIndex<sup>1.9.6</sup> | 样式 z-index 的值 | Number | - | 100 |
+| zIndex<sup>1.10.11</sup> | 样式 z-index 的值 | Number | - | 100 |
 
 ### 插槽