Skip windows for summary tests
Skip windows for summary tests

Strange test failures:

    File "C:\projects\guildai\guild\tests\summary.md", line 36, in summary.md
    Failed example:
        compiled([{"loss": "loss: (\S+)"}])
    Expected:
        loss: loss: (\S+)
    Got:
        loss: loss: (\S+)

guildai/guild,guildai/guild,guildai/guild,guildai/guild