(ACES-Core) fix broken code snippet

fixes MicrosoftDocs/azure-docs#121158

Author: chillryan

articles/azure-functions/functions-bindings-event-hubs-output.md

@@ -45,7 +45,7 @@ This article supports both programming models.
 
 The following example shows a [C# function](dotnet-isolated-process-guide.md) that writes a message string to an event hub, using the method return value as the output:
 
-:::code language="csharp" source="~/azure-functions-dotnet-worker/samples/Extensions/EventHubs/EventHubsFunction.cs" range="12-23":::
+:::code language="csharp" source="~/azure-functions-dotnet-worker/samples/Extensions/EventHubs/EventHubsFunction.cs" range="20-31":::
 
 # [In-process model](#tab/in-process)