Docs: drawText -> drawSimpleText

Change-Id: Iac503c7d5cc67986132793202e1b4479df7cdb8f
Reviewed-on: https://skia-review.googlesource.com/c/182451
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
Reviewed-by: Mike Reed <reed@google.com>
1 file changed