message: fix the unlock_duration value missing
diff: @@ -70,7 +70,7 @@ impl Into<ConstructorParamsMultisig> for multisig::ConstructorParams {
  ConstructorParamsMultisig {
  signers,
  num_approvals_threshold: self.num_approvals_threshold,
  - unlock_duration: self.num_approvals_threshold,
  + unlock_duration: self.unlock_duration,
  start_epoch: self.start_epoch,
  }
  }
  