fix vad_scorer args

lyblsgo

2023-04-21 c4142f8a111ddce1c7cbe2259c3329045842822b

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p m    p.m.
pm    p.m.
p.m.
p.m    p.m.
am    a.m.
a.m.
a.m    a.m.
a m    a.m.