docs: 新文件补末尾换行(评审 Minor)

src/app/register/actions.ts

@@ -65,4 +65,4 @@ export async function registerWithInvite(
 
   await createSession(newUserId, "家长设备", 30);
   redirect("/parent");
-}
+}

src/app/register/page.tsx

@@ -80,4 +80,4 @@ export default function RegisterPage() {
       </Card>
     </main>
   );
-}
+}