Fix Async API link in test-endpoints.md

[GeoDaoyu]

Corrected the link to Async API documentation.

https://microcks.io/documentation/references/apis/async-api/

Description

• Fix Async API link in test-endpoints.md

Related issue(s)

#482

[github-actions]

👋 @GeoDaoyu

Welcome to the Microcks community! 💖

Thanks and congrats 🎉 for opening your first pull request here! Be sure to follow the pull request template or please update it accordingly.

Hope you have a great time there!

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[yada]

LGTM with thanks

[github-actions]

🎉 @GeoDaoyu

You are now a Microcks community contributor! 💖

Thanks and congrats 🚀 on merging your first pull request! We are delighted and very proud of you! 👏

📢 If you're using Microcks in your organization, please add your company name to this list. 🙏 It really helps the project to gain momentum and credibility. It's a small contribution back to the project with a big impact.

If you need to know why and how to add yourself to the list, please read the blog post "Join the Microcks Adopters list and Empower the vibrant open source Community 🙌"

Kudos and please keep going, we need you 🙌

🌟 ~~~~~~~~~ 🌟

📢 If you like Microcks, please ⭐ star ⭐ our repo to support it!

🙏 It really helps the project to gain momentum and credibility. It's a small contribution back to the project with a big impact.