refactor(hosts): never load example.lua; make it a pure template

hyprland.lua now just uses its defaults when no hosts/<hostname>.lua
matches, instead of requiring hosts/example.lua. example.lua is kept only
as a documented template for contributors.

hypr/hyprland.lua

@@ -280,5 +280,6 @@ local hostname = (io.popen("hostname") or {}):read("*l") or ""
 hostname = hostname:gsub("%..*$", "") -- strip domain suffix
 local ok, err = pcall(require, "hosts." .. hostname)
 if not ok then
-    require("hosts.example")
+    -- No host file matches this machine; use the defaults already set above.
+    -- See hosts/example.lua for a template on adding your own host.
 end