Fixed spelling

> Like most names, it should be written in lower case with an initial capital, that is, "Lua". Please do not write it as "LUA", which is both ugly and confusing, because then it becomes an acronym with different meanings for different people. So, please, write "Lua" right!
The link doesn't work anymore, do you know if Lua2IL still exists? If not, maybe it's better to remove it here completely.