add link to supabase setup docs

Author: bleucitron

i18n.md

@@ -64,7 +64,9 @@ Svelte's REPL use a [Supabase](https://supabase.com/) instance to store user dat
 
 For development, these variables should already be set in the `.env` (even if the key is `''`), so you do not need to modify them.
 
-However, you will need to set different values for [deployment](#deploying). We obviously can not access Svelte's official Supabase instance, so **we needed to create our own [Supabase](https://supabase.com/) instance**, and provide these variables with our own values.
+However, you will need to set different values for deployment. We obviously can not access Svelte's official Supabase instance, so **we needed to create our own Supabase instance**, and provide these variables with our own values.
+
+More info on how to set up your Supabase instance [here](https://github.com/sveltejs/sites/tree/master/db).
 
 ### External links