docs(cache-valkey): fix fictional launcher.Register/health.Register in doc examples

The package-doc examples showed a fictional launcher.Register / health.Register
API (and launcher.Append as a package func). Corrected to the real wiring:
lc.Append + web/health.NewHandler(...).ServeHTTP.
(component.go doc comment corrected too.)

Documentation-only. No code, API, or dependency changes; version stays v1.1.0
(the v1.1.0 tag is moved to include this fix). Verified by compiling the
corrected pattern against the real API.

README.md

@@ -17,8 +17,9 @@ import cachevalkey "code.nochebuena.dev/einherjar/cache-valkey"
 vk := cachevalkey.New(logger, cachevalkey.Config{
     Addrs: []string{"localhost:6379"},
 })
-launcher.Register(vk) // OnInit → OnStart → OnStop
-health.Register(vk)   // PING-based health check, LevelDegraded
+lc.Append(vk) // OnInit → OnStart → OnStop
+// vk is observability.Checkable (PING-based, LevelDegraded):
+srv.Get("/health", health.NewHandler(logger, vk).ServeHTTP)
 ```
 
 ## Connecting to other modules
@@ -30,8 +31,8 @@ them directly to the consuming modules:
 ```go
 // --- 1. Create the component (lifecycle + health + Provider) ---
 vk := cachevalkey.New(logger, cfg)
-launcher.Register(vk)
-health.Register(vk)
+lc.Append(vk)
+srv.Get("/health", health.NewHandler(logger, vk).ServeHTTP)
 
 // --- 2. Create adapters (one per consumer interface) ---
 // Each adapter wraps vk (a Provider) and satisfies one interface in another module.