strings: Update Trim example.

Use an input which better shows that behaviour of the function. Only leading
and trailing runes are trimed, not intermediate ones.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/42390043

diff --git a/src/pkg/strings/example_test.go b/src/pkg/strings/example_test.go
index ccfc4172c39c712295492dfc079eccd4562f27cc..7350131b85fd07615ade000e5f65530340d9a4e0 100644 (file)
--- a/src/pkg/strings/example_test.go
+++ b/src/pkg/strings/example_test.go
@@ -150,8 +150,8 @@ func ExampleToTitle() {
 }
 
 func ExampleTrim() {
-       fmt.Printf("[%q]", strings.Trim(" !!! Achtung !!! ", "! "))
-       // Output: ["Achtung"]
+       fmt.Printf("[%q]", strings.Trim(" !!! Achtung! Achtung! !!! ", "! "))
+       // Output: ["Achtung! Achtung"]
 }
 
 func ExampleMap() {