Add trailing /

Author: Niek

doc/guide.md

@@ -253,7 +253,7 @@ server {
     server_name your-domain-name-here.com;
 
     location / {
-      proxy_pass http://127.0.0.1:8080;
+      proxy_pass http://127.0.0.1:8080/;
       proxy_set_header Host $host;
       proxy_set_header Upgrade $http_upgrade;
       proxy_set_header Connection upgrade;