update m2met2 docs

yhliang

2023-04-27 32d2b3ec153e53176da710ebcc0aba5669effd8a

1
2
3
4
5
6
7
8
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.