Update app.py

app.py

@@ -36,7 +36,7 @@ description = ''' This is an unofficial demo for T2I-Adapter
 [Paper](https://arxiv.org/abs/2302.08453)               [GitHub](https://github.com/TencentARC/T2I-Adapter) 
 '''
 if (SPACE_ID := os.getenv('SPACE_ID')) is not None:
-    DESCRIPTION += f'''<p>For faster inference without waiting in queue, you may duplicate the space and upgrade to GPU in settings.<br/>
+    description += f'''<p>For faster inference without waiting in queue, you may duplicate the space and upgrade to GPU in settings.<br/>
 <a href="https://huggingface.co/spaces/{SPACE_ID}?duplicate=true">
 <img style="margin-top: 0em; margin-bottom: 0em" src="https://bit.ly/3gLdBN6" alt="Duplicate Space"></a>
 <p/>