docs: add info about Menu overflowedIndicator prop

close #34016

components/menu/index.en-US.md

@@ -43,7 +43,7 @@ More layouts with navigation: [Layout](/components/layout).
 | mode | Type of menu | `vertical` \| `horizontal` \| `inline` | `vertical` |  |
 | multiple | Allows selection of multiple items | boolean | false |  |
 | openKeys | Array with the keys of currently opened sub-menus | string\[] | - |  |
-| overflowedIndicator | Customized icon when menu is collapsed | ReactNode | - |  |
+| overflowedIndicator | Customized the ellipsis icon when menu is collapsed horizontally | ReactNode | - |  |
 | selectable | Allows selecting menu items | boolean | true |  |
 | selectedKeys | Array with the keys of currently selected menu items | string\[] | - |  |
 | style | Style of the root node | CSSProperties | - |  |

components/menu/index.zh-CN.md

@@ -44,7 +44,7 @@ cover: https://gw.alipayobjects.com/zos/alicdn/3XZcjGpvK/Menu.svg
 | mode | 菜单类型，现在支持垂直、水平、和内嵌模式三种 | `vertical` \| `horizontal` \| `inline` | `vertical` |  |
 | multiple | 是否允许多选 | boolean | false |  |
 | openKeys | 当前展开的 SubMenu 菜单项 key 数组 | string\[] | - |  |
-| overflowedIndicator | 自定义 Menu 折叠时的图标 | ReactNode | - |  |
+| overflowedIndicator | 用于自定义 Menu 水平空间不足时的省略收缩的图标 | ReactNode | - |  |
 | selectable | 是否允许选中 | boolean | true |  |
 | selectedKeys | 当前选中的菜单项 key 数组 | string\[] | - |  |
 | style | 根节点样式 | CSSProperties | - |  |