Update Readme

Update readme to include port 80 for caddy to get ssl certs, using the script doesnt allow for ssl access to the ui, per conversation in netmaker discord troubleshooting

README.md

@@ -39,7 +39,7 @@
 **For production-grade installations, visit the [Install Docs](https://netmaker.readthedocs.io/en/master/install.html).**  
 **For an HA install using helm on k8s, visit the [Helm Repo](https://github.com/gravitl/netmaker-helm/).**
 1. Get a cloud VM with Ubuntu 20.04 and a public IP.
-2. Open ports 443, 53, and 51821-51830/udp on the VM firewall and in cloud security settings.
+2. Open ports 443, 80, 53, and 51821-51830/udp on the VM firewall and in cloud security settings.
 3. Run the script **(see below for optional configurations)**:
 
 `sudo wget -qO - https://raw.githubusercontent.com/gravitl/netmaker/master/scripts/nm-quick.sh | bash`