update README.md.

Signed-off-by: 慕炎 <29385962@qq.com>
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慕炎 2023-01-12 14:27:34 +00:00 committed by Gitee
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@ -262,6 +262,8 @@ buck模式下限压限流问题及mppt等相关算法调整
**20230109**
V3.5.41
V6.1去除升降压手动开关将IO17作为输出控制的IO,开启为低电平,关闭为高电平
V6.02使用时只需将升降压开关的3个引脚引出即可