[Event Hubs] Fix Broken Link (Azure#19262)

The focus of these changes is to fix a broken link in one of the samples.

Author: jsquire

sdk/eventhub/Azure.Messaging.EventHubs.Processor/samples/Sample04_ProcessingEvents.md

@@ -386,7 +386,7 @@ In order to ensure efficient communication with the Event Hubs service and the b
 
 This approach is optimized for scenarios where the processing of events can be performed quickly and without heavy resource costs.  For scenarios where that is not the case, it may be advantageous to collect the events into batches and send them to be processed outside of the context of the "ProcessEvent" handler.  In this example, the `processEventHandler` will group events into batches of 50 by partition, sending them to the application to process when the batch size was reached.
 
-One important thing to note is that batching with the `EventProcessorClient` may boost throughput, but more demanding applications may need more control and less ceremony to meet their higher throughput or specialized needs - that's where the [EventProcessor&lt;TPartition&gt;](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs/samples/Sample02_EventHubsClients.md) from the [Azure.Messaging.EventHubs](https://www.nuget.org/packages/Azure.Messaging.EventHubs) package is intended to help.  More on the design and philosophy behind the `EventProcessor<TPartition>` can be found in its [design document](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs/design/event-processor%7BT%7D-proposal.md).
+One important thing to note is that batching with the `EventProcessorClient` may boost throughput, but more demanding applications may need more control and less ceremony to meet their higher throughput or specialized needs - that's where the [EventProcessor&lt;TPartition&gt;](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs/samples/Sample02_EventHubsClients.md) from the [Azure.Messaging.EventHubs](https://www.nuget.org/packages/Azure.Messaging.EventHubs) package is intended to help.  More on the design and philosophy behind the `EventProcessor<TPartition>` can be found in its [design document](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs/design/proposal-event-processor%7BT%7D.md).
 
 ```C# Snippet:EventHubs_Processor_Sample04_ProcessByBatch
 var storageConnectionString = "<< CONNECTION STRING FOR THE STORAGE ACCOUNT >>";