docs: fix codecov url

Author: josantonius

.github/lang/es-ES/README.md

@@ -4,7 +4,7 @@
 [![License](https://poser.pugx.org/josantonius/asset/license)](LICENSE)
 [![Total Downloads](https://poser.pugx.org/josantonius/asset/downloads)](https://packagist.org/packages/josantonius/asset)
 [![CI](https://github.com/josantonius/php-asset/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/josantonius/php-asset/actions/workflows/ci.yml)
-[![CodeCov](https://codecov.io/gh/josantonius/php-asset/branch/master/graph/badge.svg)](https://codecov.io/gh/josantonius/php-asset)
+[![CodeCov](https://codecov.io/gh/josantonius/php-asset/branch/main/graph/badge.svg)](https://codecov.io/gh/josantonius/php-asset)
 [![PSR1](https://img.shields.io/badge/PSR-1-f57046.svg)](https://www.php-fig.org/psr/psr-1/)
 [![PSR4](https://img.shields.io/badge/PSR-4-9b59b6.svg)](https://www.php-fig.org/psr/psr-4/)
 [![PSR12](https://img.shields.io/badge/PSR-12-1abc9c.svg)](https://www.php-fig.org/psr/psr-12/)

README.md

@@ -4,7 +4,7 @@
 [![License](https://poser.pugx.org/josantonius/asset/license)](LICENSE)
 [![Total Downloads](https://poser.pugx.org/josantonius/asset/downloads)](https://packagist.org/packages/josantonius/asset)
 [![CI](https://github.com/josantonius/php-asset/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/josantonius/php-asset/actions/workflows/ci.yml)
-[![CodeCov](https://codecov.io/gh/josantonius/php-asset/branch/master/graph/badge.svg)](https://codecov.io/gh/josantonius/php-asset)
+[![CodeCov](https://codecov.io/gh/josantonius/php-asset/branch/main/graph/badge.svg)](https://codecov.io/gh/josantonius/php-asset)
 [![PSR1](https://img.shields.io/badge/PSR-1-f57046.svg)](https://www.php-fig.org/psr/psr-1/)
 [![PSR4](https://img.shields.io/badge/PSR-4-9b59b6.svg)](https://www.php-fig.org/psr/psr-4/)
 [![PSR12](https://img.shields.io/badge/PSR-12-1abc9c.svg)](https://www.php-fig.org/psr/psr-12/)