minidiag: Update strings for minidiag v1.0

Change button from btn_diag_cancel to btn_cancel.

BRANCH=dedede,volteer,trogdor,zork
BUG=b:182338095
TEST=test on DUT

Cq-Depend: chromium:2789115, chromium:2790287
Signed-off-by: Chung-Sheng Wu <chungsheng@google.com>
Change-Id: I99df981967d357743c9b786b3876ded448fbda7d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/depthcharge/+/2789114
Reviewed-by: Hsuan Ting Chen <roccochen@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Tested-by: Chung-Sheng Wu <chungsheng@chromium.org>
Commit-Queue: Chung-Sheng Wu <chungsheng@chromium.org>
1 file changed