fix codecov link (#1542)

README.md

@@ -45,7 +45,7 @@ Features:
 
 [![Test](https://github.com/aler9/rtsp-simple-server/workflows/test/badge.svg)](https://github.com/aler9/rtsp-simple-server/actions?query=workflow:test)
 [![Lint](https://github.com/aler9/rtsp-simple-server/workflows/lint/badge.svg)](https://github.com/aler9/rtsp-simple-server/actions?query=workflow:lint)
-[![CodeCov](https://codecov.io/gh/aler9/rtsp-simple-server/branch/main/graph/badge.svg)](https://codecov.io/gh/aler9/rtsp-simple-server/branch/main)
+[![CodeCov](https://codecov.io/gh/aler9/rtsp-simple-server/branch/main/graph/badge.svg)](https://app.codecov.io/gh/aler9/rtsp-simple-server/branch/main)
 [![Release](https://img.shields.io/github/v/release/aler9/rtsp-simple-server)](https://github.com/aler9/rtsp-simple-server/releases)
 [![Docker Hub](https://img.shields.io/badge/docker-aler9/rtsp--simple--server-blue)](https://hub.docker.com/r/aler9/rtsp-simple-server)
 [![API Documentation](https://img.shields.io/badge/api-documentation-blue)](https://aler9.github.io/rtsp-simple-server)