Update app.py

app.py

@@ -19,7 +19,7 @@ MARKDOWN = """
     <br>    
     <br>    
     <br>    
-    [<a href="https://arxiv.org/abs/"> arXiv paper </a>] 
+    [<a href="https://arxiv.org/abs/2409.17143"> arXiv paper </a>] 
     [<a href="https://yu-rp.github.io/api-prompting/"> project page </a>]
     [<a href="https://pypi.org/project/apiprompting/"> python package </a>]
     [<a href="https://github.com/yu-rp/apiprompting"> code </a>]