Update description

app.py

@@ -15,9 +15,8 @@ import numpy as np
 import PIL.Image
 import tensorflow as tf
 
-ORIGINAL_REPO_URL = 'https://github.com/KichangKim/DeepDanbooru'
 TITLE = 'KichangKim/DeepDanbooru'
-DESCRIPTION = f'A demo for {ORIGINAL_REPO_URL}'
+DESCRIPTION = 'This is an unofficial demo for https://github.com/KichangKim/DeepDanbooru.'
 ARTICLE = None
 
 TOKEN = os.environ['TOKEN']