docs: fix grammar and spelling in Markdown #149

Job	Run time
build_all_features	5m 20s
build_all_platforms (ubuntu-latest)	2m 23s
build_default_features (ubuntu-latest)	1m 2s
build_all_platforms (macos-latest)	5m 58s
build_default_features (macos-latest)	3m 27s
build_under_wasm	45s
build_all_platforms (windows-latest)	4m 31s
build_default_features (windows-latest)	2m 54s
check_clippy	4m 10s
check_docs	3m 19s
check_msrv	3m 56s
unit	3m 16s
	41m 1s

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