Update websocket_protocol_zh.md

Yabin Li

2023-09-01 b3ab0064524fff88d3c48c5abfa3e4258d44edb0

1
2
3
4
5
6
7
8
9
X    1
XX    2
XXX    3
XL    4
L    5
LX    6
LXX    7
LXXX    8
XC    9