8362882: Update SubmissionPublisher() specification to reflect use of ForkJoinPool.asyncCommonPool()

Reviewed-by: jpai, dl

Author: Alan Bateman

src/java.base/share/classes/java/util/concurrent/SubmissionPublisher.java

@@ -292,9 +292,7 @@ public SubmissionPublisher(Executor executor, int maxBufferCapacity) {
 
     /**
      * Creates a new SubmissionPublisher using the {@link
-     * ForkJoinPool#commonPool()} for async delivery to subscribers
-     * (unless it does not support a parallelism level of at least two,
-     * in which case, a new Thread is created to run each task), with
+     * ForkJoinPool#commonPool()} for async delivery to subscribers, with
      * maximum buffer capacity of {@link Flow#defaultBufferSize}, and no
      * handler for Subscriber exceptions in method {@link
      * Flow.Subscriber#onNext(Object) onNext}.