Rename MQTTCLient Hello example to Hello_stm32

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

examples/Communication/MQTT/MQTTClient/Hello/Hello.ino renamed to examples/Communication/MQTT/MQTTClient/Hello_stm32/Hello_stm32.ino

@@ -9,7 +9,7 @@ Download the prebuilt Arduino port of MQTTClient and in the Arduino IDE use
 
 # Examples
 
-## Hello
+## Hello_stm32 (original _name Hello_)
 This is the basic example provided with the MQTTClient library.
 It has been modified to use the [STM32 Ethernet](https://github.com/stm32duino/STM32Ethernet) library.
 
@@ -22,4 +22,4 @@ Replaced by:
 ```
 #include <LwIP.h>
 #include <STM32Ethernet.h>
-```
+```