change signup.hopescaramels.com host and port

previously we were hosting this on Coded's pi, however for reliability we have decided to move this to A1D1. This port/host change reflects this move

Change-Id: I916780da0b924fcdaa39946c3ea30075fd22986b
diff --git a/modules/nginx-routes.nix b/modules/nginx-routes.nix
index 189f8cc..51d6edc 100644
--- a/modules/nginx-routes.nix
+++ b/modules/nginx-routes.nix
@@ -1,6 +1,6 @@
 { pkgs, helpers, config, lib, ... }: {
   clicks.nginx.services = with helpers.nginx; [
-    (Host "signup.hopescaramels.com" (ReverseProxy "CodedPi.local:3035"))
+    (Host "signup.hopescaramels.com" (ReverseProxy "caramels:1024"))
     (Host "homebridge.coded.codes" (ReverseProxy "CodedPi.local:8581"))
     (Host "codedpc.coded.codes" (ReverseProxy "SamuelDesktop.local:3389"))
     (Host "testing.coded.codes" (ReverseProxy "SamuelDesktop.local:3000"))