That doesn't seem to be an issue now, tried it with Grapejuice and didn't get banned. From the Grapejuice Discord, this also seems to be the case for other Roblox on Linux users.
Git might not be the best way to manage recipes, especially when you're targeting a section of users who might have never heard of what it is. Sure, the idea of 'viewable history' is nice, but the average cook would find trouble with it. A wiki seems much better suited for this.
To add a recipe, you need to a learn markdown and create a PR. Learning markdown might not be hard, but learning to create a pull request, after creating a github account might put them off.
https://falsafa.in/