Fix register auth after success

src/routes/register/+page.svelte

@@ -36,7 +36,7 @@
             if (response.ok) {
                 const result = await response.json();
                 authentication.set(result);
-                localStorage.setItem('auth', JSON.stringify(result));
+                localStorage.setItem('authentication', JSON.stringify(result));
                 window.location.href = "/login";
             } else {
                 const error = await response.json();