Improve the description of the `user_hf_token` field

app.py

@@ -1,6 +1,6 @@
 import logging
-import subprocess
 import os
+import subprocess
 import sys
 from dataclasses import dataclass
 from pathlib import Path
@@ -166,7 +166,7 @@ def main():
             return
 
         st.text_input(
-            f"Optional: Your Hugging Face write token. Leave empty to upload under {config.hf_username}'s account.",
+            f"Optional: Your Hugging Face write token. Fill it if you want to upload the model under your account.",
             type="password",
             key="user_hf_token",
         )