fix: MoltenEvaluateRange end_line number

[HuntFeng]

Due to the end_line+1 in line 53 of reple.lua

local ok, _ = pcall(vim.fn.MoltenEvaluateRange, start_line, end_line+1)

MoltenEvaluateRange always include an extra cell marker, see screenshot below

I don't think this is intended behavior. I remove the +1, and here is the fixed behavior