Update "One to many" example in Media Handler

In the media handler there is an example of what a one-to-many media
handler would be. It used the trick play handler as an example, but that
handler is now a one-to-one media handler. Changed the example to use the
replicator media handler.

Change-Id: I26908c6e27ea4a697a19c0fa0179c60842a449d2

packager/media/base/media_handler.h

@@ -149,7 +149,7 @@ struct StreamData {
 ///      they may be independent. One example of this is encryption handler.
 ///   3) Single input multiple outputs
 ///      The input stream is split into multiple output streams. One example
-///      of this is trick play handler.
+///      of this is the replicator media handler.
 /// Other types of media handlers are disallowed and not supported.
 class MediaHandler {
  public: