Update testing badge

Author: schlessera

ja/index.md

@@ -18,7 +18,7 @@ direction: ltr
 
 現在の安定バージョンは [2.5.0](https://make.wordpress.org/cli/2021/05/19/wp-cli-v2-5-0-release-notes/) です。 最新情報を得たい人は、[@wpcli on Twitter](https://twitter.com/wpcli) をフォローするか、[メーリングリストにサインアップ](https://make.wordpress.org/cli/subscribe/)してください。[ロードマップ](https://make.wordpress.org/cli/handbook/roadmap/)で、今後のリリースの予定を知ることができます。
 
-[![Build Status](https://travis-ci.org/wp-cli/wp-cli.svg?branch=master)](https://travis-ci.org/wp-cli/wp-cli) [![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/wp-cli/wp-cli.svg)](https://isitmaintained.com/project/wp-cli/wp-cli "Average time to resolve an issue") [![Percentage of issues still open](https://isitmaintained.com/badge/open/wp-cli/wp-cli.svg)](https://isitmaintained.com/project/wp-cli/wp-cli "Percentage of issues still open")
+[![Testing](https://github.com/wp-cli/automated-tests/actions/workflows/testing.yml/badge.svg)](https://github.com/wp-cli/automated-tests/actions/workflows/testing.yml) [![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/wp-cli/wp-cli.svg)](https://isitmaintained.com/project/wp-cli/wp-cli "Average time to resolve an issue") [![Percentage of issues still open](https://isitmaintained.com/badge/open/wp-cli/wp-cli.svg)](https://isitmaintained.com/project/wp-cli/wp-cli "Percentage of issues still open")
 
 Quick links: [使い方](#使い方) | [インストール方法](#インストール方法) | [サポート](#サポート) | [拡張](#拡張) | [貢献](#貢献) | [クレジット](#クレジット)
 
@@ -214,4 +214,3 @@ WP-CLI にはプロジェクトメンテナーがいます: [schlessera](http://
 * [WordPress-CLI-Exporter](https://github.com/Automattic/WordPress-CLI-Exporter) for `wp export`
 * [WordPress-CLI-Importer](https://github.com/Automattic/WordPress-CLI-Importer) for `wp import`
 * [wordpress-plugin-tests](https://github.com/benbalter/wordpress-plugin-tests/) for `wp scaffold plugin-tests`
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