1.x: Add a sentence to documentation of take() operator (#5719)

* Add a sentence to documentation of take() operator

* Rephrase java doc for take() method

Author: sadegh

src/main/java/rx/Observable.java

@@ -10536,6 +10536,9 @@ public final Observable<T> take(final int count) {
      * Returns an Observable that emits those items emitted by source Observable before a specified time runs
      * out.
      * <p>
+     * If time runs out before the {@code Observable} completes normally, the {@code onComplete} event will be
+     * signaled on the default {@code computation} {@link Scheduler}.
+     * <p>
      * <img width="640" height="305" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/take.t.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
@@ -10560,6 +10563,9 @@ public final Observable<T> take(long time, TimeUnit unit) {
      * Returns an Observable that emits those items emitted by source Observable before a specified time (on a
      * specified Scheduler) runs out.
      * <p>
+     * If time runs out before the {@code Observable} completes normally, the {@code onComplete} event will be
+     * signaled on the provided {@link Scheduler}.
+     * <p>
      * <img width="640" height="305" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/take.ts.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>