kb(multicolumncombobox): Add KB for custom MultiColumnComboBox with Grid

Author: dimodi

components/multicolumncombobox/columns/overview.md

@@ -98,4 +98,5 @@ To bind data to the `<MultiColumnComboBoxColumn>` you can use the `Field`. This
 
 ## See Also
 
-  * [Templates]({% slug multicolumncombobox-templates %})
+* [Templates]({% slug multicolumncombobox-templates %})
+* [Use Custom MultiColumnComboBox with Grid]({%slug multicolumncombobox-kb-grid%})