chore: replace broken links

content/blog/2020-03-system-hackers-report-lyon.md

@@ -35,7 +35,7 @@ so Albert, Florian, Francesco, Thomas, Vincent and me tackled large and
 small challenges in the FSFE's systems. But we have also used the time
 to exchange knowledge about complex tasks and some interconnected
 systems. The official part was conducted in the fascinating [Astech
-Fablab](https://astech-fablab.fr), but word has it that
+Fablab](https://web.archive.org/web/20200814122815/http://astech-fablab.fr/), but word has it that
 [Ninkasi](https://www.ninkasi.fr/), an excellent pub in Lyon, was the
 actual epicentre of this year's meeting.