Revert "it's telling me to replace this with host in nginx files, see if that fixes it"

This reverts commit b1554aa23e.

nixos/server/package-configs/conduit/default.nix

@@ -137,7 +137,7 @@ in {
           extraConfig = ''
             X-Forwarded-For $remote_addr;"
             proxy_set_header X-Real-IP $remote_addr;
-            proxy_set_header Host $host;
+            proxy_set_header Host $http_host;
             proxy_buffering off;
 
             # websocket