Mention un-skip option in docs #852

Job	Run time
changes	5s
security / security-static	35s
security / codeql-gate	40m 19s
lint / lint	6m 35s
security / license-gate	3m 22s
pr-smoke	0s
test / test-windows-guards	5m 34s
test / test-tsan	13m 41s
test / setup-matrix	2s
test / test-windows (windows-latest, CLANG64, x86_64)	36m 12s
test / test-unix (macos-15-intel, cc, c++)	29m 51s
test / test-unix (ubuntu-24.04-arm, gcc, g++)	1h 39m 53s
test / test-unix (macos-14, cc, c++)	26m 29s
test / test-unix (ubuntu-latest, gcc, g++)	25m 32s
ci-ok	4s
	4h 48m 14s

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