Fix trace config in docs. am: 20d426c00d am: 80b6cac9a0 am: 7f1764848b am: f0421dd5c9
Fix trace config in docs. am: 20d426c00d am: 80b6cac9a0 am: 7f1764848b am: f0421dd5c9

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1478597

Change-Id: I982bce0011f3260260c5b8b723a9aabfe15d0d07

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