tx: Bump transifex slug to 020x
tx: Bump transifex slug to 020x

Former-commit-id: a6b3e1d8980dc73617339ae7edaf673bbdb88779
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin