Improve docs landing page #1527

Job	Run time
build (windows-latest, Debug)	10m 7s
build (windows-latest, Release)	8m 4s
build (macos-latest, Release)	6m 48s
build (ubuntu-latest, Debug)	6m 10s
build (ubuntu-latest, Release)	5m 51s
build (macos-latest, Debug)	7m 55s
publish-coverage / publish-coverage	39s
	45m 34s

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