chore(otel): Update docs for using propagator (#7548)

Author: AbhiPrasad

packages/opentelemetry-node/README.md

@@ -66,10 +66,9 @@ const sdk = new opentelemetry.NodeSDK({
 
   // Sentry config
   spanProcessor: new SentrySpanProcessor(),
+  textMapPropagator: new SentryPropagator(),
 });
 
-otelApi.propagation.setGlobalPropagator(new SentryPropagator());
-
 sdk.start();
 ```