sensevoice2jsonl.py punctuation matching fix (#2533)

yuGAN6

2025-05-28 3445cd9652c71757507216ee68eb75699b32867c

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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.