add codecov icon

README-zh.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://github.com/Tencent/spring-cloud-tencent/actions/workflows/junit_test.yml/badge.svg)](https://github.com/Tencent/spring-cloud-tencent/actions/workflows/junit_test.yml)
 [![Maven Central](https://img.shields.io/maven-central/v/com.tencent.cloud/spring-cloud-tencent?label=Maven%20Central)](https://search.maven.org/search?q=g:com.tencent.cloud%20AND%20a:spring-cloud-tencent)
-[![codecov.io](https://codecov.io/github/Tencent/spring-cloud-tencent/coverage.svg?branch=master)](https://codecov.io/github/Tencent/spring-cloud-tencent?branch=main)
+[![codecov.io](https://codecov.io/gh/Tencent/spring-cloud-tencent/branch/main/graph/badge.svg)](https://codecov.io/gh/Tencent/spring-cloud-tencent?branch=main)
 [![Contributors](https://img.shields.io/github/contributors/Tencent/spring-cloud-tencent)](https://github.com/Tencent/spring-cloud-tencent/graphs/contributors)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 [![Percentage of issues still open](http://isitmaintained.com/badge/open/Tencent/spring-cloud-tencent.svg)](https://github.com/Tencent/spring-cloud-tencent/issues)