Cleaned up various small nits in the docs #505

Job	Run time
Alpine Linux	2m 22s
FreeBSD-x86_64 with rust stable	38s
Linux-x86_64 with rust stable	1m 21s
Linux-x86_64 (rustls-native-roots) with rust stable	1m 15s
Linux-x86_64 (native-tls) with rust stable	1m 30s
Linux-x86_64 (native-tls-vendored) with rust stable	2m 47s
Linux-aarch64 with rust stable	1m 14s
Linux-arm with rust stable	1m 2s
Linux-i686 with rust stable	49s
Linux-powerpc with rust stable	47s
Linux-powerpc64 with rust stable	48s
Linux-powerpc64le with rust stable	38s
Linux-riscv64 with rust stable	1m 26s
Linux-s390x with rust stable	37s
NetBSD-x86_64 with rust stable	1m 50s
Windows-aarch64 with rust stable	3m 46s
Windows-i686 with rust stable	1m 46s
Windows-x86_64 with rust stable	4m 18s
macOS-x86_64 with rust stable	1m 50s
macOS-aarch64 with rust stable	1m 35s
Linux-x86_64 with rust beta	1m 38s
Linux-x86_64 with rust nightly	1m 39s
	35m 36s

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