Merge pull request #102263 from SumitBalia/patch-1

Adding request id($rid) formate

Author: Jak-MS

articles/iot-hub/iot-hub-devguide-direct-methods.md

@@ -167,7 +167,7 @@ The device sends responses to `$iothub/methods/res/{status}/?$rid={request id}`,
 
 * The `status` property is the device-supplied status of method execution.
 
-* The `$rid` property is the request ID from the method invocation received from IoT Hub.
+* The `$rid` property is the request ID from the method invocation received from IoT Hub. The request ID is a hexadecimal formatted value.
 
 The body is set by the device and can be any status.