docs(worker): 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.
worker exposes lc.Append only — it is not observability.Checkable, so no health hook.

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

@@ -18,7 +18,7 @@
 import "code.nochebuena.dev/einherjar/worker"
 
 w := worker.New(logger, worker.DefaultConfig())
-launcher.Append(w)   // OnInit starts pool; OnStop drains and stops
+lc.Append(w)   // OnInit starts pool; OnStop drains and stops
 ```
 
 ### Dispatching tasks

component.go

@@ -6,7 +6,7 @@ import (
 )
 
 // Component adds lifecycle management to Provider.
-// Register with launcher.Register before starting.
+// Append it to a launcher (lc.Append) before starting.
 type Component interface {
 	lifecycle.Component
 	observability.Identifiable

doc.go

@@ -9,10 +9,10 @@
 //     ShutdownTimeout for all goroutines to finish. Returns nil regardless of
 //     whether the drain completed before the deadline.
 //
-// Register with the launcher before starting:
+// Append to a launcher before starting:
 //
 //	pool := worker.New(logger, cfg)
-//	launcher.Register(pool)
+//	lc.Append(pool)
 //
 // # Dispatching Tasks
 //