Update app.py

Corrected hd image stat mistake

app.py

@@ -459,7 +459,7 @@ def make_image(prompt, user, pwd):
                 image.save(fpath)
             with open(image_count_path(user), 'at') as fp:
                 if quality == 'hd':
-                    fp.write('hd')
+                    fp.write('hd\n')
                 else:
                     fp.write('1\n')
             msg = 'Image created!'