Fix typo in push_to_gs.sh which causes incorrect upload.
Fix typo in push_to_gs.sh which causes incorrect upload.

R=vadimsh@chromium.org
BUG=

Review URL: https://codereview.chromium.org/267393015

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@269082 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools