Update README.md

Author: shenxianpeng

README.md

@@ -27,7 +27,7 @@ jobs:
 
 Here is a test repository [cpp-linter-action-demo](https://github.com/shenxianpeng/cpp-linter-action-demo) which has added `cpp-linter.yml`. when an unformatted c/c++ source file was committed and create a Pull Request will automatically recognize and add warning comments.
 
-For example, this PR [#6](https://github.com/shenxianpeng/cpp-linter-action-demo/pull/6), and warning message like below:
+For example, this PR [#7](https://github.com/shenxianpeng/cpp-linter-action-demo/pull/7), and warning message like below:
 
 ![github-actions bot](https://github.com/shenxianpeng/cpp-linter-action-demo/blob/master/img/result.png?raw=true)