Adding comment for suppressing opamp-server request instrumentation

Author: LikeTheSalad

opamp-client/src/main/java/io/opentelemetry/opamp/client/internal/connectivity/http/OkHttpSender.java

@@ -47,6 +47,8 @@ public CompletableFuture<Response> send(BodyWriter writer, int contentLength) {
     RequestBody body = new RawRequestBody(writer, contentLength, MEDIA_TYPE);
     builder.post(body);
 
+    // By suppressing instrumentations, we prevent automatic instrumentations for the okhttp request
+    // that polls the opamp server.
     InstrumentationUtil.suppressInstrumentation(() -> doSendRequest(builder.build(), future));
 
     return future;