Merge pull request ReactiveX#3791 from neoranga55/patch-2

1.x: Fix Observable delay methods typos in documenation

Author: akarnokd

src/main/java/rx/Observable.java

@@ -4434,7 +4434,7 @@ public final <U> Observable<T> delay(Func1<? super T, ? extends Observable<U>> i
      * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/delay.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
-     *  <dd>This version of {@code delay} operates by default on the {@code compuation} {@link Scheduler}.</dd>
+     *  <dd>This version of {@code delay} operates by default on the {@code computation} {@link Scheduler}.</dd>
      * </dl>
      * 
      * @param delay
@@ -4477,7 +4477,7 @@ public final Observable<T> delay(long delay, TimeUnit unit, Scheduler scheduler)
      * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/delaySubscription.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
-     *  <dd>This version of {@code delay} operates by default on the {@code compuation} {@link Scheduler}.</dd>
+     *  <dd>This version of {@code delay} operates by default on the {@code computation} {@link Scheduler}.</dd>
      * </dl>
      * 
      * @param delay

src/main/java/rx/Single.java

@@ -2362,7 +2362,7 @@ public final Single<T> delay(long delay, TimeUnit unit, Scheduler scheduler) {
      * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/delay.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
-     *  <dd>This version of {@code delay} operates by default on the {@code compuation} {@link Scheduler}.</dd>
+     *  <dd>This version of {@code delay} operates by default on the {@code computation} {@link Scheduler}.</dd>
      * </dl>
      *
      * @param delay