docs: fix typo failback #1563

Job	Run time
coding_style	16s
host_win_msvc	1m 34s
host_arm (armv7, none, g++-10)	5m 27s
host_win (x86_64)	1m 10s
host_x86 (x86_64, g++-10)	3m 17s
host_arm (armv7, none, clang++-11)	5m 36s
host_win (armv7)	1m 17s
host_x86 (x86_64, clang++-11)	34s
host_arm (aarch64, none, g++-10)	3m 53s
host_win (aarch64)	1m 20s
host_arm (aarch64, none, clang++-11)	5m 30s
host_arm (aarch64, crypto+crc, g++-10)	3m 40s
host_arm (aarch64, crypto+crc, clang++-11)	4m 50s
test_win_msvc	1m 32s
	39m 56s

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