docs: update Readme

[NasaboyZ]

No description provided.

[madmas]

Hi @NasaboyZ , thank you for the PR
Merging it would duplicate the entry for the event - can you change it to add the achievement to the list in https://github.com/NasaboyZ/hackergarten.github.io/blob/70170cb3caf9a4d4a687b791f6c6e8d39d2870f8/events.json#L262 ?
And also change the title to reflect the project name and let the linkt point to the change you crafted during the hackergarten (commit or PR) ?

[aalmiray]

There is already an entry for Basel HG on 18.03.2026, no need to create a new one.

@martinfrancois wdyt?