fix typo and update

app.py

@@ -85,7 +85,7 @@ css = """
 #qwen-md .katex-display>.katex>.katex-html { display: inline; }
 """
 
-# Crate interface
+# Create interface
 iface = gr.Interface(
     css=css,
     fn=math_chat_bot,
@@ -105,7 +105,7 @@ iface = gr.Interface(
     title="📖 Qwen2 Math Demo",
     allow_flagging='never',
     description="This WebUI is based on Qwen2-VL for OCR and Qwen2-Math for mathematical reasoning. You can input either images or texts of mathematical or arithmetic problems."
-)
+)    
 
 # Launch gradio application
 iface.launch()