Update README.md

Author: sejun2

README.md

@@ -13,6 +13,10 @@
     <td><img src="https://github.com/user-attachments/assets/06389714-c71f-4722-adcf-6189f860e8b4" width="300" alt="사랑방 리스트"></td>
     <td><img src="https://github.com/user-attachments/assets/d30d21ab-f20d-4944-a3ed-650b787302aa" width="300" alt="사랑방 프로세스"></td>
     <td><img src="https://github.com/user-attachments/assets/098be209-2ba7-4a21-a170-283f4c3fcdcf" width="300" alt="프로필"></td>
+  </tr>
+           <th>적응형 다크모드</th>  
+<tr>   
+    <td><img src="https://github.com/user-attachments/assets/a9bee07f-55eb-46bb-87ae-705cee5ccb66" width="300" alt="사랑방 리스트"></td>
   </tr>
 </table>