Update app.py

app.py

@@ -87,7 +87,7 @@ HEAD = ("""<div class="embed_hidden" style="text-align: center;">
         <a href="https://shunlinlu.github.io" target="_blank" rel="noopener noreferrer">Wenxun Dai</a><sup>2</sup>,
         <a href="https://shunlinlu.github.io" target="_blank" rel="noopener noreferrer">Xuan Ju</a><sup>3</sup>,
         <a href="https://shunlinlu.github.io" target="_blank" rel="noopener noreferrer">Shunlin Lu</a><sup>4</sup>,
-        <a href="https://leizhang.org" target="_blank" rel="noopener noreferrer">Lei Zhang</a><sup>🤗 1</sup>
+        <a href="https://leizhang.org" target="_blank" rel="noopener noreferrer">Lei Zhang</a><sup>🤗 2</sup>
     </h3>
     <h3><sup>🤗</sup><i>Corresponding author.</i></h3>
     <h3>