broken link in Readme to explain the term Amarillo

[MartinH-open]

In the Readme.md the url for explaining the term Amarillo is broken:
An Amarillo is a yellow-dressed person helping others to find a car pool in Cuba.
This URL is no longer active.

Here is an alternative link to an still active report from 2015: https://www.nzz.ch/per-autostopp-durch-den-sozialismus-ld.752468
Or a more recent report from 2022 - even with pictures: https://oncubanews.com/canaldigital/galerias/por-el-camino/los-amarillos/