typo in Lua cookbook

[jdhao]

Thanks for your cookbook on Lua, very concise and informative. There is a typo in this page

l1 = new_list{10,20,30}
print(l2) ---> {10,20,30}

should be

l1 = new_list{10,20,30}
print(l1) ---> {10,20,30}