Update otel node propagator instructions (#6501)

Author: AbhiPrasad

src/platform-includes/performance/opentelemetry-setup/node.mdx

@@ -32,9 +32,8 @@ const sdk = new opentelemetry.NodeSDK({
 
   // Sentry config
   spanProcessor: new SentrySpanProcessor(),
+  textMapPropagator: new SentryPropagator(),
 });
 
-otelApi.propagation.setGlobalPropagator(new SentryPropagator());
-
 sdk.start();
 ```