fix musl versiondb links and generator #688

Job	Run time
check-juliaup (x86_64-pc-windows-msvc-windowsstore)	1m 47s
check-juliaup (x86_64-pc-windows-msvc-windowsappinstaller)	1m 39s
test-juliaup (x86_64-pc-windows-msvc)	5m 52s
check-juliaup (x86_64-pc-windows-gnu-msi)	1m 29s
test-juliaup (x86_64-pc-windows-gnu)	5m 18s
check-juliaup (x86_64-pc-windows-gnu-msi)	1m 47s
test-juliaup (x86_64-apple-darwin)	7m 36s
check-juliaup (x86_64-apple-darwin)	1m 0s
test-juliaup (x86_64-unknown-linux-gnu)	3m 8s
check-juliaup (x86_64-unknown-linux-gnu)	1m 38s
test-juliaup (x86_64-unknown-linux-musl)	3m 34s
check-juliaup (x86_64-unknown-linux-musl)	1m 51s
test-juliaup (i686-pc-windows-msvc)	7m 32s
check-juliaup (i686-pc-windows-msvc-windowsstore)	1m 25s
test-juliaup (i686-pc-windows-gnu)	8m 38s
check-juliaup (i686-pc-windows-msvc-windowsappinstaller)	1m 16s
check-juliaup (i686-pc-windows-gnu-msi)	1m 32s
check-juliaup (i686-unknown-linux-gnu)	1m 39s
check-juliaup (i686-unknown-linux-musl)	2m 20s
check-juliaup (aarch64-unknown-linux-gnu)	1m 37s
check-juliaup (aarch64-unknown-linux-musl)	2m 10s
check-juliaup (aarch64-apple-darwin)	1m 5s
	1h 5m 53s

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