Replace Applcation Configuraton Files NIB link (#3134)

Author: nemrism

xml/System.Configuration/ConfigurationManager.xml

@@ -31,7 +31,7 @@
  To use the <xref:System.Configuration.ConfigurationManager> class, your project must reference the `System.Configuration` assembly. By default, some project templates, like Console Application, do not reference this assembly so you must manually reference it.  
   
 > [!NOTE]
->  The name and location of the application configuration file depend on the application's host. For more information, see [NIB: Application Configuration Files](https://msdn.microsoft.com/library/0d05b1b8-b18b-43d8-bb3c-526ff0c44fe0).  
+>  The name and location of the application configuration file depend on the application's host. For more information, see [Configuring Apps by using Configuration Files](~/docs/dotnet/framework/configure-apps/index.md).  
   
  You can use the built-in <xref:System.Configuration> types or derive from them to handle configuration information. By using these types, you can work directly with configuration information and you can extend configuration files to include custom information.