Use config from GTS docs.

hosts/hub/apps/gts.nix

@@ -17,7 +17,9 @@ in
     };
 
     caddy.virtualHosts."gts.thewordnerd.info".extraConfig = ''
-      reverse_proxy http://localhost:8081
+      reverse_proxy http://localhost:8081 {
+        flush_interval -1
+      }
     '';
   };
   environment.systemPackages = [ package ];