Update policies.md (#18949)

* Update policies.md

* Update policies.md

Author: Rick-Anderson

aspnetcore/security/authorization/policies.md

@@ -4,7 +4,7 @@ author: rick-anderson
 description: Learn how to create and use authorization policy handlers for enforcing authorization requirements in an ASP.NET Core app.
 ms.author: riande
 ms.custom: mvc
-ms.date: 04/15/2020
+ms.date: 6/15/2020
 no-loc: [Blazor, "Identity", "Let's Encrypt", Razor, SignalR]
 uid: security/authorization/policies
 ---
@@ -116,7 +116,9 @@ Policies are applied to Razor Pages by using the `[Authorize]` attribute with th
 
 [!code-csharp[](policies/samples/PoliciesAuthApp2/Pages/AlcoholPurchase.cshtml.cs?name=snippet_AlcoholPurchaseModelClass&highlight=4)]
 
-Policies can also be applied to Razor Pages by using an [authorization convention](xref:security/authorization/razor-pages-authorization).
+Policies can ***not*** be applied at the Razor Page handler level, they must be applied to the Page.
+
+Policies can be applied to Razor Pages by using an [authorization convention](xref:security/authorization/razor-pages-authorization).
 
 ## Requirements