Merge branch 'patch-2' into 'master'

更新 README.md See merge request !4

Merge branch 'patch-2' into 'master'
185f8954 · 李川 · 028237d0 · 7a2a0517 · 185f8954
--- a/README.md
+++ b/README.md
 # 说明
 Intel 8255 可编程并行接口芯片
 # 原理图
-![8255](https://www.codecode.net/engintime/Dream-Logic/Intel-classic-chips/8255/raw/master/8255.dlsche.svg)
+![8255](8255.dlsche.svg)
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