chore: mention Unichain in docs

Signed-off-by: alx-khramov <[email protected]>

Author: alx-khramov

docs/sdk/modules/l2.md

@@ -11,12 +11,14 @@ Modules exposes Lido MultiChain deployments. [See full info here](https://lido.f
 This is core module for all L2 functionality. It will throw error if used on with chains that are not currently supported.
 
 | **Chain**        | **wsETH** | **stETH+(un)Wrap** |
-|------------------| --------- | ------------------ |
+| ---------------- | --------- | ------------------ |
 | Optimism Sepolia | ✅        | ✅                 |
 | Optimism         | ✅        | ✅                 |
 | Soneium Minato   | ✅        | ✅                 |
 | Soneium          | ✅        | ✅                 |
-| more  🔜         |           |                    |
+| Unichain Sepolia | ✅        | ✅                 |
+| Unichain         | ✅        | ✅                 |
+| more 🔜          |           |                    |
 
 Use this helper to understand which contracts are supported on chain: