docs: nest config examples and use neutral swarm/hive names

Closes #6146

README.md

@@ -131,12 +131,17 @@ covers spreading a swarm across hosts.
         hyperhive.nixosModules.default # the whole host stack, one import
         {
           services.hyperhive = {
-            deploy.singleHostSwarm = true;        # every swarm service on this machine
-            deploy.hive-controller.enable = true; # …and a hive to run agents on
-
-            swarm.domain = "hive.example";        # the swarm's DNS domain
-            deploy.hive-controller.hiveName = "pr1ma"; # this hive's label in it
-            swarm.hives.pr1ma = { };              # the directory: just us
+            swarm = {
+              domain = "myswarm.example"; # the swarm's DNS domain
+              hives.firsthive = { }; # the directory: just us
+            };
+            deploy = {
+              singleHostSwarm = true; # every swarm service on this machine
+              hive-controller = {
+                enable = true; # …and a hive to run agents on
+                hiveName = "firsthive"; # this hive's label in it
+              };
+            };
           };
 
           # ... the rest of your host config