fix SkIRect doc to match include

changed int to int32_t as needed

Docs-Preview: https://skia.org/?cl=90840
Bug: skia:6898
Change-Id: I909168314acc5ee007d4a4d4e39062e652c7d6c6
Reviewed-on: https://skia-review.googlesource.com/90840
Commit-Queue: Cary Clark <caryclark@skia.org>
Reviewed-by: Cary Clark <caryclark@skia.org>
2 files changed