update rewards.md (#265)
update rewards.md (#265)

https://lbry.io/faq/(https://lbry.io/faq/how-to-backup-wallet) its show 404 page, i hope this is works as well
lbryio/lbry.io,lbryio/lbry.io,lbryio/lbry.io,lbryio/lbry.io