orbtk_widgets: fix typo bug in `selection_behavior`
@@ -41,7 +41,7 @@ widget!(
/// The `SelectionBehavior` widget will take care to handle the actions,
/// that should be triggered if text regions are marked or selected.
///
- /// **style:** `check-box`
+ /// **style:** `check_box`
SelectionBehavior<SelectionBehaviorState>: MouseHandler {
/// Sets or shares the target of the behavior.
target: u32,
