fix[bib]: update utonia bib short name

Author: Gofinge

index.html

@@ -475,7 +475,7 @@ <h2>Citation</h2>
             <div class="citation-box">
                 <pre>
 <code>
-@misc{zhang2026utoniaencoderpointclouds,
+@misc{zhang2026utonia,
       title={Utonia: Toward One Encoder for All Point Clouds}, 
       author={Yujia Zhang and Xiaoyang Wu and Yunhan Yang and Xianzhe Fan and Han Li and Yuechen Zhang and Zehao Huang and Naiyan Wang and Hengshuang Zhao},
       year={2026},
@@ -506,4 +506,4 @@ <h2>Citation</h2>
     <script src="js/script.js"></script>
     <!-- <script src="threejs-viewer.js"></script> -->
 </body>
-</html> 
+</html>