Improve matching algorithm documentation #458

Job	Run time
Alpine Linux	2m 23s
FreeBSD-x86_64 with rust stable	50s
Linux-x86_64 with rust stable	1m 14s
Linux-x86_64 (rustls-native-roots) with rust stable	1m 8s
Linux-x86_64 (native-tls) with rust stable	1m 7s
Linux-x86_64 (native-tls-vendored) with rust stable	2m 33s
Linux-aarch64 with rust stable	59s
Linux-arm with rust stable	1m 20s
Linux-i686 with rust stable	39s
Linux-powerpc with rust stable	1m 0s
Linux-powerpc64 with rust stable	48s
Linux-powerpc64le with rust stable	39s
Linux-riscv64 with rust stable	1m 8s
Linux-s390x with rust stable	40s
NetBSD-x86_64 with rust stable	2m 6s
Windows-aarch64 with rust stable	2m 44s
Windows-i686 with rust stable	2m 40s
Windows-x86_64 with rust stable	4m 3s
macOS-x86_64 with rust stable	1m 42s
macOS-aarch64 with rust stable	1m 12s
Linux-x86_64 with rust beta	1m 16s
Linux-x86_64 with rust nightly	1m 28s
	33m 39s

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