fix: typos in documentation files #16646

Job	Run time
check-dependency-rules	8s
check-fail-ci	10s
check-markdown	15s
check-workspace	17s
check-readme	3m 5s
preflight / preflight	1m 22s
preflight / ci-versions	1m 13s
test-rust-features	2m 2s
fmt	1m 15s
check-rust-feature-propagation	2m 5s
check-toml-format	1m 6s
check-umbrella	2m 21s
All quick checks passed	1s
	15m 20s

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