Fix links again

Author: Vectorial1024

README.md

@@ -2,8 +2,8 @@
 [![Packagist License][packagist-license-image]][packagist-url]
 [![Packagist Version][packagist-version-image]][packagist-url]
 [![Packagist Downloads][packagist-downloads-image]][packagist-stats-url]
-[![PHP Dependency Version][php-version-image]][]
-[![GitHub Actions Workflow Status][php-build-status-image]][]
+[![PHP Dependency Version][php-version-image]][packagist-url]
+[![GitHub Actions Workflow Status][php-build-status-image]][github-actions-url]
 
 This is a modern PHP port of the `google/open-location-code` repository. Please visit https://github.com/google/open-location-code for discussion and up-to-date information about **Open Location Code ("OLC", aka "Plus Code")** itself. This repository only concerns the PHP implementation.
 
@@ -139,6 +139,7 @@ composer run-script test
 
 [packagist-url]: https://packagist.org/packages/vectorial1024/open-location-code-php
 [packagist-stats-url]: https://packagist.org/packages/vectorial1024/open-location-code-php/stats
+[github-actions-url]: https://github.com/Vectorial1024/open-location-code-php/actions/workflows/php.yml
 
 [packagist-license-image]: https://img.shields.io/packagist/l/vectorial1024/open-location-code-php?style=plastic
 [packagist-version-image]: https://img.shields.io/packagist/v/vectorial1024/open-location-code-php?style=plastic