Fix typo in bug link. BUG=angleproject:2205 Change-Id: I7ff1c3d0bb380c73c07dad0a30a4a4a19c17e397 Reviewed-on: https://chromium-review.googlesource.com/909577 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>