chore: add legacy link

Author: goums

README.md

@@ -1,7 +1,10 @@
-# Gelato Automate 🍦
+# Gelato Functions 🍦
+
+> ℹ️ If you are looking for the Automate Legacy Smart Contracts version,
+> they are available on the [`legacy` branch](https://github.com/gelatodigital/automate/tree/legacy).
 
 ## Description
 
-Automate smart contract executions with Gelato by submitting tasks to `Gelato Automate`
+Automate smart contract executions with Gelato by submitting tasks to `Gelato Functions`
 
 Check out the [Gelato Documentation](https://docs.gelato.network/).