Update app.py

app.py

@@ -622,7 +622,7 @@ def create_interface():
         # Admin section
         with gr.Accordion("🔧 Admin Panel", open=False):
             gr.Markdown(
-                f"""
+                """
                 **Rebuild Index:** Use this after adding or modifying files in the `{config.kb_directory}` directory.  
                 The system will re-scan all markdown files and update the search index.
                 """