docs: Table Documentation interface description error (#38065)

Co-authored-by: YONGWEI PENG <yongweipeng@YONGWEIdeMacBook-Pro.local>

components/table/index.en-US.md

@@ -146,7 +146,7 @@ One of the Table `columns` prop for describing the table's columns, Column has t
 | showSorterTooltip | If header show next sorter direction tooltip, override `showSorterTooltip` in table | boolean \| [Tooltip props](/components/tooltip/) | true |  |
 | sortDirections | Supported sort way, override `sortDirections` in `Table`, could be `ascend`, `descend` | Array | \[`ascend`, `descend`] |  |
 | sorter | Sort function for local sort, see [Array.sort](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort)'s compareFunction. If you need sort buttons only, set to `true` | function \| boolean | - |  |
-| sortOrder | Order of sorted values: `'ascend'` `'descend'` `false` | boolean \| string | - |  |
+| sortOrder | Order of sorted values: `ascend` `descend` `null` | `ascend` \| `descend` \| null | - |  |
 | title | Title of this column | ReactNode \| ({ sortOrder, sortColumn, filters }) => ReactNode | - |  |
 | width | Width of this column ([width not working?](https://github.com/ant-design/ant-design/issues/13825#issuecomment-449889241)) | string \| number | - |  |
 | onCell | Set props on per cell | function(record, rowIndex) | - |  |

components/table/index.zh-CN.md

@@ -147,7 +147,7 @@ const columns = [
 | showSorterTooltip | 表头显示下一次排序的 tooltip 提示, 覆盖 table 中 `showSorterTooltip` | boolean \| [Tooltip props](/components/tooltip/#API) | true |  |
 | sortDirections | 支持的排序方式，覆盖 `Table` 中 `sortDirections`， 取值为 `ascend` `descend` | Array | \[`ascend`, `descend`] |  |
 | sorter | 排序函数，本地排序使用一个函数(参考 [Array.sort](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort) 的 compareFunction)，需要服务端排序可设为 true | function \| boolean | - |  |
-| sortOrder | 排序的受控属性，外界可用此控制列的排序，可设置为 `ascend` `descend` false | boolean \| string | - |  |
+| sortOrder | 排序的受控属性，外界可用此控制列的排序，可设置为 `ascend` `descend` `null` | `ascend` \| `descend` \| null | - |  |
 | title | 列头显示文字（函数用法 `3.10.0` 后支持） | ReactNode \| ({ sortOrder, sortColumn, filters }) => ReactNode | - |  |
 | width | 列宽度（[指定了也不生效？](https://github.com/ant-design/ant-design/issues/13825#issuecomment-449889241)） | string \| number | - |  |
 | onCell | 设置单元格属性 | function(record, rowIndex) | - |  |