update musl-specific comments #8107

Job	Run time
MacOS (macOS-13)	53m 8s
MacOS (macOS-14)	22m 1s
Linux (gcc, debian:stable, intel)	33m 47s
Windows (check)	51m 0s
Linux (gcc, debian:stable, arm)	29m 58s
Linux (gcc, debian:testing, intel)	34m 6s
Windows (installer)	19m 53s
Linux (gcc, debian:testing, arm)	31m 43s
Linux (clang, debian:stable, intel)	34m 44s
Linux (clang, debian:stable, arm)	30m 19s
Linux (clang, debian:testing, intel)	36m 5s
Linux (clang, debian:testing, arm)	31m 10s
	6h 47m 54s

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