docs(ComboBox): Improve AllowCustom description in Overview

components/combobox/overview.md

@@ -84,7 +84,7 @@ The Blazor ComboBox @[template](/_contentTemplates/dropdowns/features.md#groupin
 | Parameter      | Type | Description
 | ----------- | ----------- | -----------|
 | `AdaptiveMode` | `AdaptiveMode` <br /> (`None`) | The [adaptive mode]({%slug adaptive-rendering%}) of the component. |
-| `AllowCustom` | `bool` | whether the user can enter [custom values]({%slug components/combobox/custom-value%}). If enabled, the `ValueField` must be a `string`. |
+| `AllowCustom` | `bool` | Defines if the user can enter a custom value that is not among the dropdown items. The custom user input becomes the component `Value`. If enabled, the `Value` must be of type `string`. See [ComboBox Custom Values]({%slug components/combobox/custom-value%}) for details and examples. |
 | `ShowClearButton` | `bool` | whether the user will have the option to clear the selected value. When it is clicked, the `Value` will be updated to `default(TValue)`, so there must be no item in the `Data` that has such a `Value`. For example, if `TValue` is `int`, clearing the value will lead to a `0` `Value`, so if there is an Item with `0` in its `ValueField` - issues may arise with its selection. This feature can often go together with `AllowCustom`. |
 | `Data` | `IEnumerable<TItem>` | allows you to provide the data source. Required. |
 | `DebounceDelay` | `int` <br/> 150 | Time in milliseconds between the last typed symbol and the internal `oninput` event firing. Applies when the user types and filters. Use it to balance between client-side performance and number of database queries. |