Remark on async delegate event handler examples (#34549)

Author: guardrex

aspnetcore/blazor/components/event-handling.md

@@ -26,15 +26,15 @@ For event handling:
 :::moniker range=">= aspnetcore-8.0"
 
 * Delegate event handlers in Blazor Web Apps are only called in components that adopt an interactive render mode. The examples throughout this article assume that the app adopts an interactive render mode globally in the app's root component, typically the `App` component. For more information, see <xref:blazor/components/render-modes#apply-a-render-mode-to-the-entire-app>.
-* Asynchronous delegate event handlers that return a <xref:System.Threading.Tasks.Task> are supported.
+* Asynchronous delegate event handlers that return a <xref:System.Threading.Tasks.Task> (`async Task`) are supported by Blazor and adopted by Blazor Web App and Blazor WebAssembly documentation examples.
 * Delegate event handlers automatically trigger a UI render, so there's no need to manually call [`StateHasChanged`](xref:blazor/components/lifecycle#state-changes-statehaschanged).
 * Exceptions are logged.
 
 :::moniker-end
 
 :::moniker range="< aspnetcore-8.0"
 
-* Asynchronous delegate event handlers that return a <xref:System.Threading.Tasks.Task> are supported.
+* Asynchronous delegate event handlers that return a <xref:System.Threading.Tasks.Task> (`async Task`) are supported by Blazor and adopted by Blazor Server and Blazor WebAssembly documentation examples.
 * Delegate event handlers automatically trigger a UI render, so there's no need to manually call [`StateHasChanged`](xref:blazor/components/lifecycle#state-changes-statehaschanged).
 * Exceptions are logged.
 

aspnetcore/blazor/includes/js-interop/js-collocation.md

@@ -116,7 +116,7 @@ The following `JsCollocation2` component's `OnAfterRenderAsync` method loads a J
         }
     }
 
-    public async void ShowPrompt()
+    public async Task ShowPrompt()
     {
         if (module is not null)
         {