don't say experimental if its documented in bmh

Bug: skia:
Change-Id: I829e65e2548d29d069fcec6f3c17a3ea5da7294f
Reviewed-on: https://skia-review.googlesource.com/c/184023
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
1 file changed