fix: fix broken links (#267)

# What ❔

- fix broken links

## Why ❔

- The link is no longer valid and cannot be opened.

## Checklist

- [ ✅ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ✅ ] Tests for the changes have been added / updated.
- [ ✅ ] Documentation comments have been added / updated.
- [ ✅ ] Code has been formatted via `zk fmt` and `zk lint`.

docs/advanced/contracts.md

@@ -59,7 +59,7 @@ If you look on your hardhat example, you'll notice that your `deploy.ts` is actu
 `hardhat-zksync-deploy` plugin.
 
 Which inside uses the zkSync's web3.js, that calls the contract deployer
-[here](https://github.com/matter-labs/zksync-2-dev/blob/a2853871778cebe8f09faebe6f2f5c07d29b81f1/sdk/zksync-web3.js/src/contract.ts#L62)
+[here](https://github.com/matter-labs/zksync-era/blob/main/sdk/zksync-web3.js/src/contract.ts#L44)
 
 ```typescript
 override getDeployTransaction(..) {