The translated READMEs in docs/translations/ link to the Kubernetes
installation guide with a path copied from the root README
(./charts/helm/checkmate/INSTALLATION.md). Because these files live two
levels below the repo root, that path resolves to
docs/translations/charts/..., which does not exist, so the link is
broken in all 17 translations.
Fix the path to ../../charts/helm/checkmate/INSTALLATION.md so it
resolves to the repo-root charts/ directory. The root README.md is
correct as-is and is left unchanged.