Return fixed openzeppelin deprecated guide url

Author: its-everdred

README.md

@@ -1,8 +1,10 @@
-# TutorialToken Truffle Box
-
 ## This box is deprecated. It is likely some features in this box will not work as expected.
 
-Consider following [this tutorial](https://forum.openzeppelin.com/t/create-an-erc20-using-truffle-without-writing-solidity/2713) to create an ERC20 with truffle.
+Consider following [this tutorial](https://forum.openzeppelin.com/t/create-an-erc20-using-truffle-without-writing-solidity/2713) to create an ERC20 with truffle instead.
+
+# TutorialToken Truffle Box
+
+This box has all you need to get started with our [Open Zeppelin (TutorialToken) tutorial](https://trufflesuite.com/guides/robust-smart-contracts-with-openzeppelin/).
 
 ## Installation