Sync kit docs (#958)

sync kit docs

Co-authored-by: Rich-Harris <[email protected]>

Author: github-actions[bot]

apps/svelte.dev/content/docs/kit/40-best-practices/03-auth.md

@@ -18,6 +18,6 @@ Auth [cookies](@sveltejs-kit#Cookies) can be checked inside [server hooks](hooks
 
 ## Guides
 
-[Lucia](https://lucia-next.pages.dev/) is a reference for session-based web app auth. It contains example code snippets and projects for implementing session-based auth within SvelteKit and other JS projects. You can add code which follows the Lucia guide to your project with `npx sv create` when creating a new project or `npx sv add lucia` for an existing project.
+[Lucia](https://lucia-auth.com/) is a reference for session-based web app auth. It contains example code snippets and projects for implementing session-based auth within SvelteKit and other JS projects. You can add code which follows the Lucia guide to your project with `npx sv create` when creating a new project or `npx sv add lucia` for an existing project.
 
-An auth system is tightly coupled to a web framework because most of the code lies in validating user input, handling errors, and directing users to the appropriate next page. As a result, many of the generic JS auth libraries include one or more web frameworks within them. For this reason, many users will find it preferrable to follow a SvelteKit-specific guide such as the examples found in [Lucia](https://lucia-next.pages.dev/) rather than having multiple web frameworks inside their project.
+An auth system is tightly coupled to a web framework because most of the code lies in validating user input, handling errors, and directing users to the appropriate next page. As a result, many of the generic JS auth libraries include one or more web frameworks within them. For this reason, many users will find it preferrable to follow a SvelteKit-specific guide such as the examples found in [Lucia](https://lucia-auth.com/) rather than having multiple web frameworks inside their project.