Alyssa Ross 5ba04b0cc6 docs: more accurate update-test parameter name
`sha1` isn't a very accurate description of what this value can be
because it can be any git commit reference. For example, `brew test-bot`
uses `brew update-test --commit=HEAD`.
2016-09-22 19:26:24 +01:00
..
2016-09-20 10:41:42 +01:00
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