How to install Ruffle with cpanel server side

[judel]

Step 5
Add this to the top of the game page code.

<script src="./ruffle/ruffle.js"></script>

html5 game mod ibproarcade v1.1 will already have step 5 included.

Where exactly do I need to post that code? I've tried putting it in the arcade.php file, but it results in an error. The actual games are in *.swf format, and when I try to edit those, it's all gibberish. So where should it go? ETA Nevermind, I tried the other link: <script src="https://unpkg.com/@ruffle-rs/ruffle"></script> at the top of the arcade.php file and it works now. :)