Update test instructions message. Fix: 445323994 Test: manual testing Flag: EXEMPT BUGFIX Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:d96a6136b7ce077988f41fe5b84823f2079c20da Merged-In: I9505d4ce33aa43c2a1ab1ddcc5a46bb3d018bf3f Change-Id: I9505d4ce33aa43c2a1ab1ddcc5a46bb3d018bf3f