Update kubernetes link to use the new github org
Update kubernetes link to use the new github org

The old one redirects, but better to be up to date I think.
prometheus/docs,du2016/prometheus-docs,tcolgate/docs,du2016/prometheus-docs,ddfreyne/prometheus-docs,open-falcon/open-falcon.github.io,open-falcon/open-falcon.github.io,Cepave/openfalcon.io,chosenken/docs,chosenken/docs,prometheus/docs,chosenken/docs,ddfreyne/prometheus-docs,Cepave/openfalcon.io,Cepave/openfalcon.io,prometheus/docs,tcolgate/docs,open-falcon/open-falcon.github.io,tcolgate/docs,du2016/prometheus-docs,ddfreyne/prometheus-docs,chosenken/docs,ddfreyne/prometheus-docs