Add note explaining template repo (#18525)

* Add note explaining template repo

* reword and link to correct repo

* minor

docs/core/tools/custom-templates.md

@@ -2,7 +2,7 @@
 title: Custom templates for dotnet new
 description: Learn about custom templates for any type of .NET project or files.
 author: thraka
-ms.date: 06/14/2019
+ms.date: 05/20/2020
 ---
 
 # Custom templates for dotnet new
@@ -11,7 +11,10 @@ The [.NET Core SDK](https://dotnet.microsoft.com/download) comes with many templ
 
 You can install custom templates from a NuGet package on any NuGet feed, by referencing a NuGet *.nupkg* file directly, or by specifying a file system directory that contains the template. The template engine offers features that allow you to replace values, include and exclude files, and execute custom processing operations when your template is used.
 
-The template engine is open source, and the online code repository is at [dotnet/templating](https://github.com/dotnet/templating/) on GitHub. Visit the [dotnet/dotnet-template-samples](https://github.com/dotnet/dotnet-template-samples) repo for samples of templates. More templates, including templates from third parties, are found at [Available templates for dotnet new](https://github.com/dotnet/templating/wiki/Available-templates-for-dotnet-new) on GitHub. For more information about creating and using custom templates, see [How to create your own templates for dotnet new](https://devblogs.microsoft.com/dotnet/how-to-create-your-own-templates-for-dotnet-new/) and the [dotnet/templating GitHub repo Wiki](https://github.com/dotnet/templating/wiki).
+The template engine is open source, and the online code repository is at [dotnet/templating](https://github.com/dotnet/templating/) on GitHub. More templates, including templates from third parties, are found at [Available templates for dotnet new](https://github.com/dotnet/templating/wiki/Available-templates-for-dotnet-new) on GitHub. For more information about creating and using custom templates, see [How to create your own templates for dotnet new](https://devblogs.microsoft.com/dotnet/how-to-create-your-own-templates-for-dotnet-new/) and the [dotnet/templating GitHub repo Wiki](https://github.com/dotnet/templating/wiki).
+
+> [!NOTE]
+> Template examples are available at the [dotnet/dotnet-template-samples](https://github.com/dotnet/dotnet-template-samples) GitHub repository. However, while these examples are good resource for learning how the templates work, the repository is archived and no longer maintained. The examples may be out of date and no longer working.
 
 To follow a walkthrough and create a template, see the [Create a custom template for dotnet new](../tutorials/cli-templates-create-item-template.md) tutorial.