message: docs(Overlay): add api version tip
diff: @@ -64,16 +64,16 @@ export default {
  | z-index | z-index | *string \| number* | `1` | - |
  | duration | Animation duration | *string \| number* | `0.3` | - |
  | class-name | ClassName | *string* | - | - |
  -| custom-class | Custom style | *object* | - | - |
  +| custom-class | Custom style | *object* | - | 2.2.5 |
  ### Events
  -| Event | Description | Arguments |
  -|------|------|------|
  -| click | Triggered when clicked | event: Event |
  +| Event | Description | Arguments | Version |
  +|------|------|------|------|
  +| click | Triggered when clicked | event: Event | - |
  ### Slots
  -| Name | Description |
  -|------|------|
  -| default | Default slot |
  +| Name | Description | Version |
  +|------|------|------|
  +| default | Default slot | 2.2.5 |
  