message: Fixing document for Transcation / TranscationData
  Closes:
diff: @@ -11,8 +11,10 @@ A transaction on the blockchain.
  | Name | Type | Description |
  |---------------------------|------------------------------------------|--------------------------------------------------------------------------------------------|
  | version | unsigned int64 | The on-chain version or unique identifier of this transaction |
  +| transaction | [TransactionData](#type-transactiondata) | Transaction payload |
  +| hash | string | hex encoded string of hash of this transaction, hex encoded |
  +| bytes | string | hex encoded string of raw bytes of the transaction, hex encoded |
  | events | List<[Event](type_event.md)> | List of associated events. Empty for no events |
  -| transaction_data | [TransactionData](#type-transactiondata) | Metadata for this transaction |
  | vm_status | [VMStatus](#type-vmstatus) | The returned status of the transaction after being processed by the VM |
  | gas_used | unsigned int64 | Amount of gas used by this transaction, to know how much you paid for the transaction, you need multiply it with your RawTransaction#gas_unit_price |
  @@ -42,7 +44,7 @@ Transaction data is serialized into one JSON object with a "type" field to indic
  | Name | Type | Description |
  |---------------------|----------------|----------------------------------------------------------------|
  -| type | string | Type name of EventData |
  +| type | string | Type of TransactionData |
  #### blockmetadata
  @@ -78,6 +80,7 @@ User submitted transaction.
  | gas_unit_price | unsigned int64 | Maximum gas price to be paid per unit of gas |
  | expiration_timestamp_secs | unsigned int64 | The expiration time (Unix Epoch in seconds) for this transaction |
  | script_hash | string | Hex-encoded hash of the script used in this transaction |
  +| script_bytes | string | Hex-encoded string of the bytes of the script |
  | script | [Script](#type-script) | The transaction script and arguments of this transaction |
  TODO: how the script_hash is created?
  