Localize '/docs/tutorials/stateful-application/basic-stateful-set' path

[MaxymVlasov]

• Location popularity: 90/100
• Site path: https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set
• Git EN dir path: https://github.com/kubernetes-i18n-ukrainian/website/tree/master/content/en/docs/tutorials/stateful-application
• Copy file(s) to UK: mkdir -p content/uk/docs/tutorials/stateful-application && cp content/en/docs/tutorials/stateful-application/basic-stateful-set.md content/en/docs/tutorials/stateful-application/_index.md content/uk/docs/tutorials/stateful-application