fix primary class.

Author: QianhuiWu

index.html

@@ -637,7 +637,7 @@ <h2 class="title">BibTeX</h2>
     year={2025},
     eprint={2506.03143},
     archivePrefix={arXiv},
-    primaryClass={cs.CV},
+    primaryClass={cs.CL},
     url={https://arxiv.org/abs/2506.03143},
 }</code></pre>
   </div>