Fix docs #267

Job	Run time
test (1.6, ubuntu-latest, x86)	5m 10s
test (1.6, ubuntu-latest, x64)	5m 26s
test (1.6, macOS-latest, x64)	4m 13s
test (1.6, windows-latest, x86)	15m 3s
test (1.6, windows-latest, x64)	23m 36s
test (1, ubuntu-latest, x86)	4m 48s
test (1, ubuntu-latest, x64)	6m 7s
test (1, macOS-latest, x64)	4m 41s
test (1, windows-latest, x86)	7m 31s
test (1, windows-latest, x64)	7m 4s
test (nightly, ubuntu-latest, x86)	4m 58s
test (nightly, ubuntu-latest, x64)	4m 43s
test (nightly, macOS-latest, x64)	5m 47s
test (nightly, windows-latest, x86)	8m 56s
test (nightly, windows-latest, x64)	6m 52s
	1h 54m 55s

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