The hacktoberfest topic “translation” is ready for review, I am not sure on who to ping, if anyone here want to have a look feel free to do it 
Proposing a french localization topic for hacktober fest 2021 by aHenryJard · Pull Request #4561 · jenkins-infra/jenkins.io · GitHub
I had some DM to do other language (it seems to be a very easy first contribution for people that are comfortable in other languages than English) so I added it, but with the warning that I can only review French one.