Update readme.md

Author: EugeneLapshov

readme.md

@@ -22,7 +22,7 @@ To apply custom property values to a dashboard, you need to create an extension.
 
 1. Model.
 
-    The model is an object that contains the property name, type, and default value. It also specifies on which level the property is created (dashboard, dashboard item or data item container). Use the [Model.registerCustomProperty](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Model.registerCustomProperty-1?v=20.1) property to register the custom property definition.
+    The model is an object that contains the property name, type, and default value. It also specifies on which level the property is created (dashboard, dashboard item or data item container). Use the [Model.registerCustomProperty](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Model.registerCustomProperty-1) property to register the custom property definition.
 
 2. Viewer
 
@@ -115,7 +115,7 @@ This extension enables you to set a dashboard's description in the dashboard men
 
 **Overview**:
 - Adds a custom string property for a dashboard.
-- Shows how to add a new item to the [ToolBox](https://docs.devexpress.com/Dashboard/117442/designer-and-viewer-applications/web-dashboard/ui-elements/toolbox?v=20.1). In this example, a new item is added to the [dashboard menu](https://docs.devexpress.com/Dashboard/117444/designer-and-viewer-applications/web-dashboard/ui-elements/dashboard-menu?v=20.1).
+- Shows how to add a new item to the [ToolBox](https://docs.devexpress.com/Dashboard/117442/designer-and-viewer-applications/web-dashboard/ui-elements/toolbox). In this example, a new item is added to the [dashboard menu](https://docs.devexpress.com/Dashboard/117444/designer-and-viewer-applications/web-dashboard/ui-elements/dashboard-menu).
 - Demonstrates how to create complex editors using templates. In this example, it is the [dxPopup](https://js.devexpress.com/jQuery/Documentation/ApiReference/UI_Components/dxPopup/) widgets with the [dxTextArea](https://js.devexpress.com/jQuery/Documentation/ApiReference/UI_Components/dxTextArea/) and [dxButton](https://js.devexpress.com/jQuery/Documentation/ApiReference/UI_Components/dxButton/) widgets inside.
 
 ### ItemDescriptionExtension
@@ -128,7 +128,7 @@ This extension enables you to set a description for each dashboard item. The das
 
 Overview:
 - Adds a custom string property for each dashboard item.
-- Integrates a _Description (Custom)_ section into the _Options_ menu with the predefined [buttonGroup](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Designer.FormItemTemplates?v=20.1#js_devexpress_dashboard_designer_formitemtemplates_buttongroup_static) template.
+- Integrates a _Description (Custom)_ section into the _Options_ menu with the predefined [buttonGroup](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Designer.FormItemTemplates#js_devexpress_dashboard_designer_formitemtemplates_buttongroup_static) template.
 - Shows how to enable or disable editors depending on a custom property's value. 
 
 ### ChartAxisMaxValueExtension
@@ -140,7 +140,7 @@ This extension allows you to change the maximum value of the Y-axis in the Chart
 ![](images/ChartAxisMaxValueExtension.png)
 
 Overview:
-- Adds a set of custom properties with [different types](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Model.CustomPropertyMetadata?v=20.1#js_devexpress_dashboard_model_custompropertymetadata_valuetype) (number, boolean, and string) for a specific dashboard item (Chart).
+- Adds a set of custom properties with [different types](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Model.CustomPropertyMetadata#js_devexpress_dashboard_model_custompropertymetadata_valuetype) (number, boolean, and string) for a specific dashboard item (Chart).
 - Demonstrates how to bind a custom property to a list of data items.
 - Shows how to enable or disable editors depending on a custom property's value. 
 
@@ -184,9 +184,10 @@ Overview:
 - [WPF Dashboard Viewer - Custom Properties](https://github.com/DevExpress-Examples/wpf-dashboard-custom-properties)
 - [Multiplatform Example - Constant Lines](https://github.com/DevExpress-Examples/dashboard-constant-lines)
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