#5382 Corrected Single.delay documentation (#5409)

* #5382 Corrected Single.delay documentation 

Corrected Single.delay documentation that says that success or error signals will be delayed by the specified amount, but in fact errors are not delayed, only successes.

* #5382 Corrected Single.delay documentation

Corrected Single.delay documentation that says that success or error signals will be delayed by the specified amount, but in fact errors are not delayed, only successes.

Author: mithunsasidharan

src/main/java/io/reactivex/Single.java

@@ -1633,14 +1633,13 @@ public final Single<T> delay(long time, TimeUnit unit) {
     }
 
     /**
-     * Delays the emission of the success or error signal from the current Single by
-     * the specified amount.
+     * Delays the emission of the success signal from the current Single by the specified amount.
      * <dl>
      * <dt><b>Scheduler:</b></dt>
      * <dd>you specify the {@link Scheduler} where the non-blocking wait and emission happens</dd>
      * </dl>
      *
-     * @param time the time amount to delay the signals
+     * @param time the time amount to delay the emission of the success signal
      * @param unit the time unit
      * @param scheduler the target scheduler to use fro the non-blocking wait and emission
      * @return the new Single instance