Fix registration email and markdown parser singleton

server/api/auth/register.post.ts

@@ -90,7 +90,7 @@ export default defineEventHandler(async (e): Promise<Return> => {
                     template: 'registration',
                     data: {
                         id: emailId, timestamp,
-                        userId: id,
+                        userId: id.id,
                         username: body.data.username,
                     },
                 }