fixing image

Author: furmangg

articles/event-hubs/event-hubs-create-kafka-enabled.md

@@ -36,7 +36,7 @@ If you do not have an Azure subscription, create a [free account](https://azure.
 
 3. Provide a unique name and enable Kafka on the namespace. Click **Create**.
 
-    ![Create a namespace](./media/event-hubs-create-kafka-enabled/create-kafka-namespace.png)
+    ![Create a namespace](./media/event-hubs-create-kafka-enabled/create-kafka-namespace.jpg)
 
 4. Once the namespace is created, on the **Settings** tab click **Shared access policies** to get the connection string.