Update Hugging Face Paper Claimer UI.

app.py

@@ -115,7 +115,9 @@ def get_papers(
 
 with gr.Blocks() as demo:
     gr.HTML("<h1 style='text-align:center;'>Hugging Face Paper Claimer</h1>")
-    gr.Markdown("This Space helps you claim your papers on Hugging Face papers")
+    gr.HTML(
+        "<div style='text-align:center;'>This Space helps you claim your papers on Hugging Face papers</div>"
+    )
     with gr.Row():
         gr.LoginButton(size="sm")
         gr.LogoutButton(size="sm")