Merge branch 'master' into development

Author: adbridge

README.md

@@ -74,7 +74,7 @@ $ mbed compile -S
 
 ## Expected output
 
-Once the example starts to run, you can [monitor a serial terminal](https://os.mbed.com/docs/mbed-os/latest/tutorials/serial-comm.html) to see that the device connects to your network, exchanges some TLS handshakes, connects to AWS and publishes to the topic you just subscribed. This can be seen on the AWS console as incoming messages.
+Once the example starts to run, you can [monitor a serial terminal](https://os.mbed.com/docs/mbed-os/v6.0/tutorials/serial-comm.html) to see that the device connects to your network, exchanges some TLS handshakes, connects to AWS and publishes to the topic you just subscribed. This can be seen on the AWS console as incoming messages.
 
 The application publishes a message every second for 10 seconds, or until it receives a message from the cloud:
 ```