update token description

[mx2s]

Token explorer url:
https://wavesexplorer.com/assets/BkuYDLDunSy7dvep7NgQcmiY4iyqTq3diHwdGPrFUCMC

[mx2s]

update asset info transaction isn't available on the mainnet at this point
docs links:
https://docs.wavesplatform.com/en/blockchain/transaction-type/
https://docs.wavesplatform.com/en/blockchain/transaction-type/update-asset-info-transaction