DOC: missing punctuation & some grammar fixes (#307) #168

Job	Run time
build (18.x, ubuntu-latest, bash)	54s
build (18.x, macos-latest, bash)	40s
build (18.x, windows-latest, bash)	2m 5s
build (18.x, windows-latest, powershell)	1m 48s
build (20.x, ubuntu-latest, bash)	49s
build (20.x, macos-latest, bash)	39s
build (20.x, windows-latest, bash)	1m 40s
build (20.x, windows-latest, powershell)	1m 22s
build (22.x, ubuntu-latest, bash)	52s
build (22.x, macos-latest, bash)	53s
build (22.x, windows-latest, bash)	1m 17s
build (22.x, windows-latest, powershell)	1m 4s
	14m 3s

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