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
1 file changed