Tests

fix doc of read_image #2863

Job	Run time
unittests-extended / linux-job	17m 42s
onnx / linux-job	5m 7s
unittests-linux (3.10, linux.12xlarge, cpu) / linux-job	23m 9s
unittests-linux (3.12, linux.12xlarge, cpu) / linux-job	22m 24s
unittests-linux (3.11, linux.12xlarge, cpu) / linux-job	21m 30s
unittests-linux (3.8, linux.12xlarge, cpu) / linux-job	23m 25s
unittests-linux (3.9, linux.12xlarge, cpu) / linux-job	23m 13s
unittests-macos (3.10, macos-m1-stable) / macos-job	2m 7s
unittests-linux (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job	21m 25s
unittests-macos (3.11, macos-m1-stable) / macos-job	2m 4s
unittests-macos (3.12, macos-m1-stable) / macos-job	2m 8s
unittests-macos (3.8, macos-m1-stable) / macos-job	2m 12s
unittests-macos (3.9, macos-m1-stable) / macos-job	2m 15s
unittests-windows (3.10, windows.4xlarge, cpu) / windows-job	4m 2s
unittests-windows (3.11, windows.4xlarge, cpu) / windows-job	3m 26s
unittests-windows (3.12, windows.4xlarge, cpu) / windows-job	4m 46s
unittests-windows (3.8, windows.4xlarge, cpu) / windows-job	3m 41s
unittests-windows (3.8, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job	21m 33s
unittests-windows (3.9, windows.4xlarge, cpu) / windows-job	3m 24s
	3h 29m 33s

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