fix: complete todos

[therealharpaljadeja]

Description

• Added Faucet and Explorer links
• Fixed monadDevnet -> monadTestnet

[portdeveloper]

Just one small nitpick here:
The deployedContracts.ts file under packages/nextjs/contracts is regenerated on deployments and we should probably keep it as it is in a clean SE-2. The file is used to keep a tie between the deployed contracts and the frontend and will be different for every contract.

Below is what this template should have:
`/**

• This file is autogenerated by Scaffold-ETH.
• You should not edit it manually or your changes might be overwritten.
  */
  import { GenericContractsDeclaration } from "~~/utils/scaffold-eth/contract";

const deployedContracts = {} as const;

export default deployedContracts satisfies GenericContractsDeclaration;
`

Scaffold-ETH 2 will auto-modify it when people deploy contracts.

P.S.: I have a monad extension PR coming for scaffold-eth so it will be a lot easier for people to get started with SE-2. We might not even need this repo!