2.x: Fix JavaDoc wording of onTerminateDetach (#5783)

Author: akarnokd

src/main/java/io/reactivex/Flowable.java

@@ -10524,7 +10524,7 @@ public final Flowable<T> onExceptionResumeNext(final Publisher<? extends T> next
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code onTerminateDetach} does not operate by default on a particular {@link Scheduler}.</dd>
      * </dl>
-     * @return a Flowable which out references to the upstream producer and downstream Subscriber if
+     * @return a Flowable which nulls out references to the upstream producer and downstream Subscriber if
      * the sequence is terminated or downstream cancels
      * @since 2.0
      */

src/main/java/io/reactivex/Observable.java

@@ -9012,7 +9012,7 @@ public final Observable<T> onExceptionResumeNext(final ObservableSource<? extend
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code onTerminateDetach} does not operate by default on a particular {@link Scheduler}.</dd>
      * </dl>
-     * @return an Observable which out references to the upstream producer and downstream Observer if
+     * @return an Observable which nulls out references to the upstream producer and downstream Observer if
      * the sequence is terminated or downstream calls dispose()
      * @since 2.0
      */