[documentation] small README changes #82

Job	Run time
build-on-windows (windows-debug)	44s
build-on-linux (linux-kvm-debug)	52s
build-on-windows (windows-release)	52s
build-on-linux (linux-kvm-release)	52s
build-on-linux (linux-hyperv-debug)	1m 3s
build-on-linux (linux-hyperv-release)	58s
fuzzing / fuzz	9m 57s
rust / build (windows-2022-debug)	9m 32s
rust / build (linux-kvm-debug)	8m 16s
rust / build (linux-hyperv-debug)	9m 24s
rust / build (windows-2022-release)	9m 18s
rust / build (linux-kvm-release)	8m 33s
rust / build (linux-hyperv-release)	9m 20s
	1h 9m 41s

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