Fix test target name in TEST_MAPPING file am: 9eb275ef74

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libpalmrejection/+/18604552

Change-Id: I7805209d154748c7bdcd96d8d0d212b38be523f0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>