Fix template syntax error in api_tokens.html

templates/api_tokens.html

@@ -147,7 +147,7 @@
                     <tr>
                         <td colspan="5" style="text-align: center; color: #6b7280;">No API tokens found. Generate your first token above.</td>
                     </tr>
-                    {% endfor %}
+                    {% endif %}
                 </tbody>
             </table>
         </div>