message: docs: fix typo in comment of code_hash
diff: @@ -13,7 +13,7 @@ pub const ALWAYS_SUCCESS_HASH: H256 = h256!("0x1");
  #[derive(Clone, Default, Serialize, Deserialize, PartialEq, Eq, Hash, HasOccupiedCapacity)]
  pub struct Script {
  pub args: Vec<Vec<u8>>,
  - // Binary hash here can be used to refer to binary in one of the dep
  + // Code hash here can be used to refer to the data in one of the dep
  // cells of current transaction. The hash here must match the hash of
  // cell data so as to reference a dep cell.
  pub code_hash: H256,
  