use correct node version else cannot install

Author: nidhi-singh02

README.md

@@ -41,7 +41,7 @@ Fortuna is an off-chain service which can be used by [Entropy](https://pyth.netw
 
 Please install the following tools in order to work in this repository:
 
-- [NVM](https://github.com/nvm-sh/nvm?tab=readme-ov-file#installing-and-updating) to manage your node version, then run `nvm use 20` to ensure you are using node version 20.
+- [NVM](https://github.com/nvm-sh/nvm?tab=readme-ov-file#installing-and-updating) to manage your node version, then run `nvm use 22` to ensure you are using node version 22.
 - [Foundry](https://book.getfoundry.sh/getting-started/installation) in order to use `forge` for Ethereum contract development
 - [Solana CLI](https://solana.com/docs/intro/installation) for working with Solana programs.
   - After installing, please run `solana keygen new` to generate a local private key.