bookmaker generated site docs

The documents were generated by running
tools/bookmaker against docs/*.bmh

No-Try: true
Docs-Preview: https://skia.org/?cl=28002
Change-Id: I7d7dd73cdea4a234c6175646d5b8938e1af3117a
Reviewed-on: https://skia-review.googlesource.com/28002
Reviewed-by: Cary Clark <caryclark@skia.org>
Commit-Queue: Cary Clark <caryclark@skia.org>
16 files changed