update paper

Author: zouyonghao

_layouts/home.html

@@ -79,7 +79,7 @@ <h2 id="publications">Publications</h2>
                     <p>Proceedings of the 2021 USENIX Annual Technical Conference (USENIX ATC), 2021.</p>
 
                     <ul>
-                        <li><a href="https://ieeexplore.ieee.org/document/9560876">Effective Crash Recovery of Robot
+                        <li><a href="https://zouyonghao.github.io/assets/paper/rory.pdf">Effective Crash Recovery of Robot
                                 Software Programs in ROS</a></li>
                     </ul>
                     <p><b>Yong-Hao Zou</b>, Jia-Ju Bai.</p>