Update iot-hub-devguide-messages-read-builtin.md

Acro: Event Hub -> event hub

Author: v-stsavell

articles/iot-hub/iot-hub-devguide-messages-read-builtin.md

@@ -52,7 +52,7 @@ In the portal, the Event Hub-compatible endpoint field contains a complete Event
 | Hostname | abcd1234namespace.servicebus.windows.net |
 | Namespace | abcd1234namespace |
 
-You can then choose any shared access policy from the drop-down as shown in the screenshot above. It only shows policies that have the **ServiceConnect** permissions to connect to the specified Event Hub.
+You can then choose any shared access policy from the drop-down as shown in the screenshot above. It only shows policies that have the **ServiceConnect** permissions to connect to the specified event hub.
 
 The SDKs you can use to connect to the built-in Event Hub-compatible endpoint that IoT Hub exposes include: