Specify units for BaseplateTopZ in examples/README #1701

Job	Run time
HIP (hipcc, Release, 4.2.00)	6m 10s
CUDA (nvcc, Release, 4.0.01)	8m 52s
CI (ubuntu:latest, g++, SERIAL, Debug, 4.0.01, Internal, None)	3m 55s
CI (ubuntu:latest, g++, SERIAL, Release, 4.0.01, Internal, None)	2m 38s
CI (ubuntu:latest, g++, OPENMP, Debug, 4.0.01, Internal, None)	2m 46s
CI (ubuntu:latest, g++, OPENMP, Release, 4.0.01, Internal, None)	2m 38s
CI (ubuntu:latest, clang++, SERIAL, Debug, 4.0.01, Internal, None)	3m 17s
CI (ubuntu:latest, clang++, SERIAL, Release, 4.0.01, Internal, None)	2m 13s
CI (ubuntu:latest, clang++, OPENMP, Debug, 4.0.01, Internal, None)	2m 30s
CI (ubuntu:latest, clang++, OPENMP, Release, 4.0.01, Internal, None)	2m 26s
CI (ubuntu:intel, icpx, SERIAL, Release, 4.0.01, External, None)	3m 21s
CI (ubuntu:intel, icpx, OPENMP, Release, 4.0.01, External, None)	30m 2s
CI (ubuntu:latest, g++, SERIAL, Debug, 4.0.01, External, None)	4m 14s
CI (ubuntu:latest, g++, SERIAL, Release, 4.0.01, External, Finch)	3m 15s
	1h 18m 17s

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