[Docs]: Astro passwort/username guide contain typo

[skorphil]

Description

Here https://lucia-auth.com/tutorials/username-and-password/astro#:~:text=.attributes)%3B-,return%20Astro.redirect(%22/login%22)%3B,-%7D

seems like should be

- return Astro.redirect("/login");
+ return context.redirect("/login");

[pilcrowOnPaper]

Fixed with #1584