docs: Remove asterisk that causes build error in oauth-tutorial.mdx (#8666)

Update oauth-tutorial.mdx

Remove * from example that's causing an unexpected character error

docs/docs/getting-started/oauth-tutorial.mdx

@@ -205,7 +205,7 @@ Create the following [Server hook](https://kit.svelte.dev/docs/hooks) file. This
 import { SvelteKitAuth } from "@auth/sveltekit"
 import GitHub from "@auth/core/providers/github"
 import { GITHUB_ID, GITHUB_SECRET } from "$env/static/private"
- *
+
 export const handle = SvelteKitAuth({
   providers: [GitHub({ clientId: GITHUB_ID, clientSecret: GITHUB_SECRET })],
 })