message: docs: update link to the `Script` code
diff: @@ -69,7 +69,11 @@ More information about Cell can be found in the [whitepaper](https://github.com/
  -More information about Script can be [here](https://github.com/nervosnetwork/ckb-demo-ruby-sdk/blob/master/docs/how-to-write-contracts.md#script-model). Also you can find how the `Script` structure is implemented by reading [these codes](https://github.com/nervosnetwork/ckb/blob/master/core/src/script.rs#L13).
  +More information about Script can be [here](https://github.com/nervosnetwork/ckb-demo-ruby-sdk/blob/master/docs/how-to-write-contracts.md#script-model).
  +
  +Also you can find how the `Script` structure is implemented from these codes:
  +
  +https://github.com/nervosnetwork/ckb/blob/17b48a0777753a91691146b3817758c02db6f415/core/src/script.rs#L13-L53
  