Update plc-ide-getting-started.md

Added activation tutorial link at the end of the document

Author: akash73

content/software/plc-ide/tutorials/getting-started/01.plc-ide-getting-started/plc-ide-getting-started.md

@@ -45,4 +45,9 @@ You can now use the **Arduino PLC IDE 1.0** on your Windows computer!
 
 You can now double click the file to launch the Arduino PLC IDE on your machine.
 
-![Installed Arduino PLC IDE](assets/plc-ide-windows.png)
+![Installed Arduino PLC IDE](assets/plc-ide-windows.png)
+
+### Licence activation procedure
+
+If you want to activate your key, [follow this tutorial](https://docs.arduino.cc/software/plc-ide/tutorials/plc-ide-setup-license)
+