fix: wrong difficult on the front page
fix: wrong difficult on the front page

https://github.com/moneroexamples/onion-monero-blockchain-explorer/issues/195

moneroexamples/onion-monero-blockchain-explorer,moneroexamples/onion-monero-blockchain-explorer,moneroexamples/onion-monero-blockchain-explorer,moneroexamples/onion-monero-blockchain-explorer