message: docs(stack): add direction to prop table
diff: @@ -83,6 +83,7 @@ render(<StackEx />);
  | Name | Type | Default | Description |
  | -------------------- | -------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------ |
  | `isInline` | `boolean` | | If `true` the items will be stacked horizontally inline. |
  +| `direction` | `horizontal`, `vertical` | | The direction to stack the items. |
  | `children` | `React.ReactNode` | | The content of the stack. |
  | `spacing` | `StyledSystem.MarginProps` | | The space between each stack item |
  | `align` | `string` | | The alignment of the stack item. Similar to `align-items` |
  