update notes

NOTES.md

@@ -34,7 +34,10 @@ sudo systemctl reload docker
 
 # Install NPM
 ```
-sudo apt-get install npm
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.2/install.sh | bash
+source ~/.bashrc
+nvm install node npm
+
 sudo npm install -g http-server
 ```