https://www.telerik.com/kendo-jquery-ui/documentation/api/javascript/dataviz/ui/chart/configuration/categoryaxis.highlight.border.dashtype
categoryAxis.highlight.border.dashType - API Reference - Kendo UI Chart - Kendo UI for jQuery
In this article you can see how to configure the categoryAxis.highlight.border.dashType property of the Kendo UI Chart.
api referencekendo uicategoryaxishighlightborder