Fix file path referenced from documentation
Fix file path referenced from documentation

The file was moved in http://r.android.com/1885637

This fixes `infra/perfetto.dev/build`

Change-Id: I04868fee0bfe641c30aadd0189c867381dd2a84a

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