zkSync broken link update to documentation url

Update to documentation URL instead of zkSync homepage

public/content/developers/docs/scaling/zk-rollups/index.md

@@ -240,7 +240,7 @@ Projects working on zkEVMs include:
 
 - **[Taiko](https://taiko.xyz)** - _Taiko is a decentralized, Ethereum-equivalent ZK-rollup (a [Type 1 ZK-EVM](https://vitalik.eth.limo/general/2022/08/04/zkevm.html))._
 
-- **[ZKSync](https://zksync.io/)** - _ZkSync Era is an EVM-compatible ZK Rollup built by Matter Labs, powered by its own zkEVM._
+- **[ZKSync](https://docs.zksync.io/)** - _ZkSync Era is an EVM-compatible ZK Rollup built by Matter Labs, powered by its own zkEVM._
 
 - **[Starknet](https://starkware.co/starknet/)** - _StarkNet is an EVM-compatible layer 2 scaling solution built by StarkWare._