use the correct tokenizer

app.py

@@ -32,10 +32,9 @@ def feedback(text):
     if len(corrections) == 0:
         feedback = f'Looks good! Keep up the good work'
     else:
-        suggestion = tokenizer.batch_decode(corrections[0], skip_special_tokens=True)
+        suggestion = grammar_tokenizer.batch_decode(corrections[0], skip_special_tokens=True)
         feedback = f'\'{suggestion}\' might be a little better'
     return f'FEEDBACK:  {feedback}'
-    return "Great stuff"
 
 iface = gr.Interface(
     chat,