[documentation] small README changes #85

Job	Run time
build-on-windows (windows-debug)	53s
build-on-linux (linux-kvm-debug)	1m 6s
build-on-windows (windows-release)	53s
build-on-linux (linux-kvm-release)	51s
build-on-linux (linux-hyperv-debug)	59s
build-on-linux (linux-hyperv-release)	58s
fuzzing / fuzz	9m 51s
rust / build (windows-2022-debug)	16m 28s
rust / build (linux-kvm-debug)	9m 47s
rust / build (linux-hyperv-debug)	9m 55s
rust / build (windows-2022-release)	19m 58s
rust / build (linux-kvm-release)	14m 6s
rust / build (linux-hyperv-release)	14m 22s
	1h 40m 7s

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