chore: update download link

[ybw0014]

Description

Update the download link in README.md to blob builds.

Proposed changes

Related Issues (if applicable)

Checklist

• I have fully tested the proposed changes and promise that they will not break everything into chaos.
• I have also tested the proposed changes in combination with various popular addons and can confirm my changes do not break them.
• I have made sure that the proposed changes do not break compatibility across the supported Minecraft versions (1.16.* - 1.20.*).
• I followed the existing code standards and didn't mess up the formatting.
• I did my best to add documentation to any public classes or methods I added.
• I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values
• I added sufficient Unit Tests to cover my code.

[github-actions]

Your Pull Request was automatically labelled as: "🧹 Chores"
Thank you for contributing to this project! ❤️

[JustAHuman-xD]

problems:

1. Those are direct downloads compared to the previous page, idk if thats a good idea
2. there are also download things on the wiki (which can be addressed in a separate pr) (https://github.com/Slimefun/Wiki/blob/master/pages/Installing-Slimefun.md)

[JustAHuman-xD]

problems:

1. Those are direct downloads compared to the previous page, idk if thats a good idea
2. there are also download things on the wiki (which can be addressed in a separate pr) (https://github.com/Slimefun/Wiki/blob/master/pages/Installing-Slimefun.md)

The first problem is what allowed you to snipe this PR from me lol, I was trying to find a way to not do direct downloads

[ybw0014]

the release channels are displayed together, unless walshy adds something to separately show them

[variananora]

I was trying to find a way to not do direct downloads

Yeah same, when updating the ?latest Discord tag I just used DDL rather than the page. If blob.build can do something like https://blob.build/project/Slimefun4#dev or https://blob.build/project/Slimefun4#rc to auto scroll the page that would be awesome tho.

[WalshyDev]

WalshyDev/blob-builds#15