docs: clarify that the Helm repo URL is not a browsable page

[valeriahhdez]

Description

• This PR clarifies that the Helm repo URL is not a browsable page in the following reference article: https://microcks.io/documentation/references/configuration/helm-chart-config/

Related issue(s)

Fixes #566: Seems that https://microcks.io/helm no longer exist

[github-actions]

👋 @valeriahhdez

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!

[yada]

LGTM

[github-actions]

🎉 @valeriahhdez

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 🙌