[Dashboard] Fix M62 reference rev.
[Dashboard] Fix M62 reference rev.

BUG=chromium:765703

Review-Url: https://chromiumcodereview.appspot.com/3019473002

catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult