Added more detailed NGINX Config for SSL

docs/how-to-guides/new-user-guides/infrastructure-setup/nginx-load-balancer.md

@@ -63,8 +63,17 @@ After installing NGINX, you need to update the NGINX configuration file, `nginx.
             server <IP_NODE_3>:443 max_fails=3 fail_timeout=5s;
         }
         server {
-            listen     443;
+            listen     443 ssl;
             proxy_pass rancher_servers_https;
+            ssl_certificate /path/to/tls.crt;
+            ssl_certificate_key /path/to/key.key;
+            location / {
+                proxy_pass https://rancher_servers_https;
+                proxy_set_header Host <rancher UI URL>;
+                proxy_ssl_server_name on;
+                proxy_ssl_name <rancher UI URL>
+
+            }
         }
 
     }