v1.1.1: Update walletjs.html
1.Adjust the number of characters in each QR code from 400 to 250.
2.There is an error in the calculation of the miner fee per byte, which has been corrected.
1.Adjust the number of characters in each QR code from 400 to 250.
2.There is an error in the calculation of the miner fee per byte, which has been corrected.