Update .env.example

docker/.env.example

@@ -39,15 +39,10 @@ APP_WEB_URL=
 # File preview or download Url prefix.
 # used to display File preview or download Url to the front-end or as Multi-model inputs;
 # Url is signed and has expiration time.
-#
 # Setting FILES_URL is required for file processing plugins.
-#
-# Set FILES_URL based on how you access the Dify server:
 #   - For https://example.com, use FILES_URL=https://example.com
 #   - For http://example.com, use FILES_URL=http://example.com
-#
 #   Recommendation: use a dedicated domain (e.g., https://upload.example.com).
-#
 #   Alternatively, use http://<your-ip>:5001 or http://api:5001,
 #   ensuring port 5001 is externally accessible (see docker-compose.yaml).
 FILES_URL=