Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: valbeat

README.md

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 # PHP Result
 
 ![Packagist Version](https://img.shields.io/packagist/v/valbeat/result)
-[![codecov](https://codecov.io/gh/valbeat/php-result/branch/main/graph/badge.svg?token=B1P4MQMP7J)](https://codecov.io/gh/valbeat/php-result)
+[![codecov](https://codecov.io/gh/valbeat/php-result/branch/main/graph/badge.svg)](https://codecov.io/gh/valbeat/php-result)
 
 A Result type implementation for PHP inspired by Rust's `Result<T, E>` type.