Update README.md

SharingSource · web-flow · commit 238565aa8b06 · 2021-02-03T10:26:04.000+08:00
diff --git a/README.md b/README.md
@@ -2,4 +2,4 @@
 
 &#20844;&#20247;&#21495;&#12300;&#23467;&#27700;&#19977;&#21494;&#30340;&#21047;&#39064;&#26085;&#35760;&#12301;&#21047;&#31359; LeetCode &#31995;&#21015;&#25991;&#31456;&#28304;&#30721;
 
-![&#23467;&#27700;&#19977;&#21494;&#30340;&#21047;&#39064;&#26085;&#35760;](https://raw.githubusercontent.com/SharingSource/LogicStack-LeetCode/main/qrcode_for_gh_430.jpg)
+![&#23467;&#27700;&#19977;&#21494;&#30340;&#21047;&#39064;&#26085;&#35760;](https://raw.githubusercontent.com/SharingSource/LogicStack-LeetCode/main/qr_code_promote.png)

Original file line number	Diff line number	Diff line change
`@@ -2,4 +2,4 @@`
`2`	`2`
`3`	`3`	`公众号「宫水三叶的刷题日记」刷穿 LeetCode 系列文章源码`
`4`	`4`
`5`		`-![宫水三叶的刷题日记](https://raw.githubusercontent.com/SharingSource/LogicStack-LeetCode/main/qrcode_for_gh_430.jpg)`
	`5`	`+![宫水三叶的刷题日记](https://raw.githubusercontent.com/SharingSource/LogicStack-LeetCode/main/qr_code_promote.png)`