Add an option to display the doc on the left. (#770) #498

Job	Run time
test (ubuntu-latest, 27.2, false)	50s
test (ubuntu-latest, 28.2, false)	55s
test (ubuntu-latest, 29.3, false)	51s
test (macos-latest, 27.2, false)	5m 37s
test (macos-latest, 28.2, false)	2m 37s
test (macos-latest, 29.3, false)	2m 37s
test (windows-latest, 27.2, false)	1m 43s
test (windows-latest, 28.2, false)	1m 27s
test (windows-latest, 29.3, false)	2m 12s
test (ubuntu-latest, snapshot, true)	43s
test (macos-latest, snapshot, true)	2m 7s
test (windows-latest, snapshot, true)	1m 17s
	22m 56s

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