Slightly reword HeapBuffered<> example. am: 5a26bf8850
Slightly reword HeapBuffered<> example.
am: 5a26bf8850

Change-Id: If0cef627e697a94a77f574d776e82522389583c1

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto