Update 6.0.0 docs. #4077

Job	Run time
package-macos-aarch64	5m 51s
package-generic-linux-aarch64	23m 42s
package-generic-linux-x64	2m 28s
package-deb-x64	5m 23s
package-macos-x64	9m 50s
package-windows-x64	31m 12s
test-docker-x64-packages	5m 43s
test-generic-linux-on-docker-debian-x64	2m 52s
test-generic-linux-on-docker-ubuntu-x64	3m 7s
test-generic-linux-on-docker-archlinux-x64	2m 46s
test-generic-linux-on-docker-fedora-x64	2m 38s
package-anatomy	10s
	1h 35m 42s

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