Fix identation error

app.py

@@ -351,8 +351,8 @@ with gr.Blocks(
                 </div>
                 """
             )
-        with gr.Tab("About Us"):
-        gr.HTML(
+        with gr.Tab("References"):
+            gr.HTML(
             """
             <div style="max-width: 800px; margin: auto; padding: 20px; border: 1px solid #ccc; border-radius: 10px;">
                     <ul style="font-size: 16px; margin-bottom: 20px; margin-top: 20px;">
@@ -376,7 +376,6 @@ South Pacific Design Automation Conference (ASP-DAC). IEEE, 2024, pp. 722–727.
                 </div>
                 """
             )
-
         with gr.Row():
             with gr.Accordion("📙 Citation", open=False):
                 citation_button = gr.Textbox(