Tweak punctuation in man page #3346

Job	Run time
Actionlint	37s
Test x86_64-unknown-linux-gnu	1m 51s
Test x86_64-apple-darwin	4m 11s
Test x86_64-pc-windows-msvc	2m 24s
Test aarch64-unknown-linux-gnu	3m 1s
Test aarch64-apple-darwin	1m 41s
Test x86_64-unknown-linux-musl	2m 7s
Rustfmt	31s
Check Linux Packaging	1m 37s
Output Regression Test	2m 19s
Test Linux (latest stable Rust)	1m 43s
Test with MIME database	1m 43s
	23m 45s

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