docs(combobox) improve client api ref

Author: Marin Bratanov

api/client/args/Telerik.Web.UI.RadComboBoxItemCancelEventArgs.md

@@ -23,8 +23,7 @@ Returns the item that is about to be selected/checked from the RadComboBox list.
 
 #### Returns
 
-`Telerik.Web.UI.RadComboBoxItem` - the the item about to be selected/checked from the RadComboBox list.
-
+`Telerik.Web.UI.RadComboBoxItem` the the item about to be selected/checked from the RadComboBox list.
 
 ### get_domEvent
 
@@ -34,7 +33,7 @@ Returns the Sys.UI.DomEvent instance associated to the raised event.
 
 #### Returns
 
-`Sys.UI.DomEvent` 
+`Sys.UI.DomEvent` the underlying DOM event from the browser
 
 ### get_cancel
 
@@ -44,15 +43,17 @@ Gets a boolean value indicating whether the event is cancelled.
 
 #### Returns
 
-`Boolean` - whether the event is cancelled.
+`Boolean` whether the event is cancelled.
 
 ### set_cancel
 
 Sets a boolean value that indicates whether the event will be cancelled.
 
 #### Parameters
 
-`Boolean` - whether the event will be cancelled.
+`Boolean` whether the event will be cancelled.
 
 #### Returns
 
+`None`
+