Mention the note about NVIDIA Grace #274

Job	Run time
coding-style	14s
host-arm (armv7, none, none, g++-10)	3m 29s
host-win-msvc	1m 15s
host-arm (armv7, none, none, clang++-11)	3m 26s
host-win (x86_64)	48s
host-x86 (x86_64, g++-10)	2m 7s
host-win (armv7)	40s
host-arm (aarch64, none, none, g++-10)	2m 58s
host-x86 (x86_64, clang++-11)	33s
host-win (aarch64)	38s
host-arm (aarch64, none, none, clang++-11)	3m 54s
host-arm (aarch64, crypto+crc, none, g++-10)	2m 46s
host-arm (aarch64, crypto+crc, none, clang++-11)	3m 24s
host-arm (armv7, none, -mcpu=cortex-a32 -mfpu=neon-fp-armv8, g++-10)	3m 22s
host-arm (armv7, none, -mcpu=cortex-a32 -mfpu=neon-fp-armv8, clang++-11)	3m 24s
test-win-msvc	53s
	33m 51s

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