pinwheel: Use tailscale DNS for ssh to backwards

hosts/pinwheel/modules/ssh/default.nix

@@ -5,8 +5,8 @@
       enable = true;
 
       matchBlocks = {
-        "backwards.local" = {
-          hostname = "192.168.50.202";
+        "backwards" = {
+          hostname = "backwards";
           user = "alex";
           identityFile = "/home/alex/.ssh/alex.pinwheel-backwards";
           port = 1122;