wsl: fix user id

wsl-docker/README.md

@@ -161,10 +161,12 @@ services:
     network_mode: host
     volumes:
       - $HOME/.ssh:/root/.ssh
-    entrypoint: ssh w@localhost '~/.venv/bin/jupyter lab --IdentityProvider.token=""'
+    entrypoint: ssh $USER@localhost '~/.venv/bin/jupyter lab --IdentityProvider.token=""'
 EOF
 docker compose up -d # Jupyter 서버 시작
+```
 
+```sh
 docker compose logs -f # 서버 상태 보기 & Ctrl+C로 나오기
 
 cd ~/.jupyter && docker compose down # 서버 종료