Update app.py

app.py

@@ -103,7 +103,7 @@ title = """
     [<a href="https://s3.amazonaws.com/pf-user-files-01/u-59356/uploads/2023-06-04/rw32pwp/ACL2023.mp4" style="color:blue;">Presentation</a>]
 </h3>
 <div style="text-align: center">
-    <img src="./header_image.jpg" alt="Perso-Arabic scripts used by the target languages in our paper">
+    <img src="./Perso-Arabic_scripts.jpg" alt="Perso-Arabic scripts used by the target languages in our paper">
 </div>
     """