updated usage function

manage.sh

@@ -53,6 +53,7 @@ Options:
     --console        start docker compose as console
     --delete         stop and delete container and delete files in ${WP_ROOT_FOLDER}
     --down           stop docker compose and delete container
+    --env <env_name> environment name (MANDATORY)
     --stop           stop docker compose
     --start          start docker compose as daemon
     --version        version