Minor clarifications to Integer Semantics doc.

Bug: None
Change-Id: Ice995f86c4e2a7c9389ea118333236ddc794d81e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1733804
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Chris Palmer <palmer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#684039}
1 file changed