How to get a words from a website in lua?

So I have this code but I wand to get the word from the website

This is what I have

str = 'licensevlad'
if string.find(str, "licensevlad") then
end

So I want to get the word from https://raw.githubusercontent.com/IoYnga/WolfEngine/master/test.txt

So if I want to remove access I edit the file from GitHub.

I was thinking about

str = 'https://raw.githubusercontent.com/IoYnga/WolfEngine/master/test.txt'
if string.find(str, "licensevlad") then
end

But I don't think this will work...