time: display results in examples rather soon

We have fixed the playground to display results of
the program when it was timed out.

This CL fixes how soon results will be displayed to the user.

Change-Id: Ifb75828e0de12c726c8ca6e2d04947e01913dc73
Reviewed-on: https://go-review.googlesource.com/c/146237Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/time/example_test.go

@@ -132,7 +132,7 @@ func ExampleAfter() {
 	select {
 	case m := <-c:
 		handle(m)
-	case <-time.After(5 * time.Minute):
+	case <-time.After(10 * time.Second):
 		fmt.Println("timed out")
 	}
 }
@@ -144,7 +144,7 @@ func ExampleSleep() {
 func statusUpdate() string { return "" }
 
 func ExampleTick() {
-	c := time.Tick(1 * time.Minute)
+	c := time.Tick(5 * time.Second)
 	for now := range c {
 		fmt.Printf("%v %s\n", now, statusUpdate())
 	}