update

SusuZzhang · SusuZzhang · commit 9d88dba28b4e · 2022-03-16T22:01:17.000+08:00
diff --git a/README.md b/README.md
@@ -32,4 +32,4 @@
   
 * p19_跑马灯   [源码下载](p19_跑马灯)    [博文地址](https://xugaoxiang.com/2021/10/08/pyqt5-19-marquee/)
 * 
-* p20_柱状图 [源码下载](p20_柱状图)    [博文地址](https://xugaoxiang.com/2021/10/08/pyqt5-20-barchart/)
+* p20_柱状图 [源码下载](p20_柱状图)    [博文地址](https://xugaoxiang.com/2022/03/16/pyqt5-20-barchart/)

Original file line number	Diff line number	Diff line change
`@@ -32,4 +32,4 @@`
`32`	`32`
`33`	`33`	`* p19_跑马灯 [源码下载](p19_跑马灯) [博文地址](https://xugaoxiang.com/2021/10/08/pyqt5-19-marquee/)`
`34`	`34`	`*`
`35`		`-* p20_柱状图 [源码下载](p20_柱状图) [博文地址](https://xugaoxiang.com/2021/10/08/pyqt5-20-barchart/)`
	`35`	`+* p20_柱状图 [源码下载](p20_柱状图) [博文地址](https://xugaoxiang.com/2022/03/16/pyqt5-20-barchart/)`