Remove broken link to "Build an App in Pure JS" article

[Belgarus]

Remove broken link to "Build an App in Pure JS" article

Description

I removed the link to the Medium article “Build an App in Pure JS”
(https://medium.com/codingthesmartway-com-blog/pure-javascript-building-a-real-world-application-from-scratch-5213591cfcd6)
because it now returns a 410 Gone error with the message “User deactivated or deleted their account.”

Motivation and Context

This change improves the quality of the repository by removing a link that no longer leads to valid content.
Dead links can frustrate users and reduce trust in the resources provided.

How Has This Been Tested?

The link was manually visited and confirmed to return a 410 Gone error.
No other parts of the file were modified.

Types of changes

• Content Update (change which fixes an issue or updates an already existing submission)
• New Article (change which adds functionality)
• Documentation change

Checklist

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have made checks to ensure URLs and other resources are valid.