Where do you report broken Community Installers? - Diablo 1 Tchernobog mod

Hi guys. Newbe here. I was wondering where news about broken community installers should be reported?

I have issue with Diablo 1 with Tchernobog mod. The installer is broken as it fails to download the mod:

Downloading https://github.com/legluondunet/MyLittleLutrisScripts/raw/master/Diablo/Tchernobog_plus.7z 404 Client Error

Is there a way to contact installer creator and ask him to fix it? Can a person such as me post a fix myself?

Edit: is there also a way to access existing install script and modify it?