Sync README.md with crate docs #952

Job	Run time
cross (ubuntu-latest, nightly)	2m 17s
cross (ubuntu-latest, stable)	1m 29s
cross (macos-latest, nightly)	1m 51s
cross (macos-latest, stable)	1m 20s
test (ubuntu-latest, nightly)	1m 34s
clippy	13s
test (ubuntu-latest, beta)	1m 43s
msrv (ubuntu-latest)	38s
fmt	12s
test (ubuntu-latest, stable)	1m 40s
msrv (windows-latest)	54s
security_audit	10s
test (windows-latest, nightly)	2m 3s
wine	1m 24s
test (windows-latest, beta)	2m 21s
test (windows-latest, stable)	2m 11s
test (macos-latest, nightly)	1m 15s
test (macos-latest, beta)	1m 7s
test (macos-latest, stable)	1m 9s
test (windows-latest, nightly-x86_64-pc-windows-gnu)	2m 23s
test (windows-latest, nightly-i686-pc-windows-msvc)	2m 49s
test (windows-latest, nightly-i686-pc-windows-gnu)	2m 10s
	32m 53s

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