docs: Add Table expandIconColumnIndex -1 desc

components/table/index.en-US.md

@@ -170,7 +170,7 @@ Properties for expandable.
 | defaultExpandAllRows | Expand all rows initially | boolean | false |
 | defaultExpandedRowKeys | Initial expanded row keys | string\[] | - |
 | expandIcon | Customize row expand Icon. Ref [example](https://codesandbox.io/s/fervent-bird-nuzpr) | function(props): ReactNode | - |
-| expandIconColumnIndex | Customize expand icon column index | number | - |
+| expandIconColumnIndex | Customize expand icon column index. Not render when `-1` | number | - |
 | expandedRowKeys | Current expanded row keys | string\[] | - |
 | expandedRowRender | Expanded container render for each row | function(record, index, indent, expanded): ReactNode | - |
 | expandRowByClick | Whether to expand row by clicking anywhere in the whole row | boolean | false |

components/table/index.zh-CN.md

@@ -177,7 +177,7 @@ const columns = [
 | defaultExpandAllRows | 初始时，是否展开所有行 | boolean | false |
 | defaultExpandedRowKeys | 默认展开的行 | string\[] | - |
 | expandIcon | 自定义展开图标，参考[示例](https://codesandbox.io/s/fervent-bird-nuzpr) | function(props): ReactNode | - |
-| expandIconColumnIndex | 自定义展开按钮的列顺序 | number | - |
+| expandIconColumnIndex | 自定义展开按钮的列顺序，`-1` 时不展示 | number | - |
 | expandedRowKeys | 展开的行，控制属性 | string\[] | - |
 | expandedRowRender | 额外的展开行 | function(record, index, indent, expanded): ReactNode | - |
 | expandRowByClick | 通过点击行来展开子行 | boolean | false |