docs(telemetry): 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.
Also: launcher.BeforeStop (nonexistent) -> defer shutdown, matching the README.

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.

doc.go

@@ -31,8 +31,8 @@
 //	    }
 //	    defer shutdown(ctx)
 //
-//	    // Wire into the launcher so shutdown runs before process exit:
-//	    //   launcher.BeforeStop(func() error { return shutdown(ctx) })
+//	    // Place the defer before lc.Run() so shutdown fires after the launcher
+//	    // stops, before the process exits.
 //	}
 //
 // # Local Development: console mode