fix(nginx): fix typo

nginx/nginx.prod.template

@@ -11,7 +11,7 @@ server {
         proxy_pass http://steering:8000/openid/;
         proxy_redirect $scheme://$host/oidc_callback.html /oidc_callback.html;
         proxy_redirect $scheme://$host/oidc_callback_silentRenew.html /oidc_callback_silentRenew.html;
-        proxy_redirect $schme://$host/ /;
+        proxy_redirect $scheme://$host/ /;
         proxy_redirect ~^/?(.*)$ $scheme://$host:$server_port/steering/$1;
 
         proxy_set_header Upgrade           $http_upgrade;