Documentation: fix drawSimpleText

Change-Id: I72302576824484eadef9f0e1b045e4095fc443e6
Reviewed-on: https://skia-review.googlesource.com/c/184068
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed