(minor) json_db: add file header, fix formatting
(minor) json_db: add file header, fix formatting

spesmilo/electrum,pooler/electrum-ltc,vialectrum/vialectrum,pooler/electrum-ltc,vialectrum/vialectrum,wakiyamap/electrum-mona,vialectrum/vialectrum,wakiyamap/electrum-mona,wakiyamap/electrum-mona,pooler/electrum-ltc,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,spesmilo/electrum,spesmilo/electrum