Document additional data that is returned in getaddressutxos when chainInfo=true #244

This documentation :

(or, if chainInfo is true):

{
  "utxos":
    [
      {
        "address"     (string)  The address base58check encoded
        "txid"        (string)  The output txid
        "height"      (number)  The block height
        "outputIndex" (number)  The output index
        "script"      (string)  The script hex encoded
        "satoshis"    (number)  The number of zatoshis of the output
      }, ...
    ],
  "hash"              (string)  The block hash
  "height"            (numeric) The block height
}

from upstream needs to be added to our code.

https://zcash-rpc.github.io/getaddressutxos.html

https://faq.hush.is/rpc/getaddressutxos.html