service/s3/s3cyrpto: Fix NewKMSWrapEntry example documentation
Fixes the  NewKMSKeyGeneratorWithMatDesc example to include the `s3crypto` package identifier for the `KMSWrap` constant.
@@ -65,7 +65,7 @@ func NewKMSKeyGeneratorWithMatDesc(kmsClient kmsiface.KMSAPI, cmkID string, matd
// decryptHandler := s3crypto.NewKMSWrapEntry(customKMSClient)
//
// svc := s3crypto.NewDecryptionClient(sess, func(svc *s3crypto.DecryptionClient) {
-// svc.WrapRegistry[KMSWrap] = decryptHandler
+// svc.WrapRegistry[s3crypto.KMSWrap] = decryptHandler
// }))
func NewKMSWrapEntry(kmsClient kmsiface.KMSAPI) WrapEntry {
// These values are read only making them thread safe
