Update to the actions sample readme (again).
Update to the actions sample readme (again).

Change-Id: I23e5c4f67b905629060462b265a938bf6ec82de7

Kevded/functions-samples,firebase/functions-samples,Kevded/functions-samples,firebase/functions-samples,firebase/functions-samples,Kevded/functions-samples,Kevded/functions-samples,firebase/functions-samples