Update link to Chromium Modern C++ style guide Bug: chromium:1243839 Change-Id: I6a6a25fdb86db1b2dfefbf156697bd0898cb948e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3167210 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>