Add registerAction2 note

src/vs/workbench/common/actions.ts

@@ -22,7 +22,7 @@ export interface IWorkbenchActionRegistry {
 	/**
 	 * Registers a workbench action to the platform. Workbench actions are not
 	 * visible by default and can only be invoked through a keybinding if provided.
-	 * @deprecated Register directly with KeybindingsRegistry and MenuRegistry instead.
+	 * @deprecated Register directly with KeybindingsRegistry and MenuRegistry or use registerAction2 instead.
 	 */
 	registerWorkbenchAction(descriptor: SyncActionDescriptor, alias: string, category?: string, when?: ContextKeyExpr): IDisposable;
 }