docs: Fix broken link in HeavyData README.md

[Neo-Oli]

Description

The link is dead, probably due to a misconfiguration of the web server. Without www it works though.

Dead: http://www.vicfieger.com/ Working: https://vicfieger.com/

Requirements / Checklist

• [x] Read the Contributing Guidelines
• [ ] ~Verified the license of any newly added font, glyph, or glyph set~

What does this Pull Request (PR) do?

This is just a small documentation change.

How should this be manually tested?

Click the link to check if it works.

Any background context you can provide?

I was looking for the source and license of the font, and noticed a broken link.

~What are the relevant tickets (if any)?~

~Screenshots (if appropriate or helpful)~

[Finii]

Great, thanks for reporting and fixing! :green_heart:

[Finii]

@allcontributors please add @Neo-Oli for doc

[allcontributors[bot]]

@Finii

I've put up a pull request to add @Neo-Oli! :tada: