extend max length

app/app.py

@@ -131,7 +131,7 @@ if prompt_group_name in ["Indonesian Newspaper"]:
     max_length = st.sidebar.number_input(
         "Maximum length",
         value=250,
-        max_value=512,
+        max_value=1024,
         help="The maximum length of the sequence to be generated."
     )