docs(upload): update `showUploadList` prop (#5533)

* Update index.en-US.md

add `showDownloadIcon` option

* Update index.zh-CN.md

add `showDownloadIcon` option

components/upload/index.en-US.md

@@ -44,7 +44,7 @@ Uploading is the process of publishing information (web pages, text, pictures, v
 | previewIcon | custom preview icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
 | progress | Custom progress bar | [ProgressProps](/components/progress/#API) (support `type="line"` only) | { strokeWidth: 2, showInfo: false } | 3.0 |  |
 | removeIcon | custom remove icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
-| showUploadList | Whether to show default upload list, could be an object to specify `showPreviewIcon` and `showRemoveIcon` individually | Boolean or { showPreviewIcon?: boolean, showRemoveIcon?: booleanshowDownloadIcon?: boolean } | true | showDownloadIcon(3.0) |  |
+| showUploadList | Whether to show default upload list, could be an object to specify `showPreviewIcon`,  `showRemoveIcon` and `showDownloadIcon` individually | Boolean or { showPreviewIcon?: boolean, showRemoveIcon?: boolean, showDownloadIcon?: boolean } | true | showDownloadIcon(3.0) |  |
 | supportServerRender | Need to be turned on while the server side is rendering. | boolean | false |  |  |
 | withCredentials | ajax upload with cookie sent | boolean | false |  |  |
 

components/upload/index.zh-CN.md

@@ -45,7 +45,7 @@ cover: https://gw.alipayobjects.com/zos/alicdn/QaeBt_ZMg/Upload.svg
 | previewIcon | 自定义预览 icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
 | progress | 自定义进度条样式 | [ProgressProps](/components/progress/#API)（仅支持 `type="line"`） | { strokeWidth: 2, showInfo: false } | 3.0 |  |
 | removeIcon | 自定义删除 icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
-| showUploadList | 是否展示 uploadList, 可设为一个对象，用于单独设定 showPreviewIcon 和 showRemoveIcon | Boolean or { showPreviewIcon?: boolean, showRemoveIcon?: boolean, showDownloadIcon?: boolean } | true | showDownloadIcon(3.0) |  |
+| showUploadList | 是否展示 uploadList, 可设为一个对象，用于单独设定 showPreviewIcon, showRemoveIcon 和 showDownloadIcon | Boolean or { showPreviewIcon?: boolean, showRemoveIcon?: boolean, showDownloadIcon?: boolean } | true | showDownloadIcon(3.0) |  |
 | supportServerRender | 服务端渲染时需要打开这个 | boolean | false |  |  |
 | withCredentials | 上传请求时是否携带 cookie | boolean | false |  |  |