Wrong tag in kube core metric doc

[Mathieu Marleix]

Documentation Page

https://docs.datadoghq.com/integrations/kubernetes_state_core/?tab=helm

kubernetes_state.endpoint.address_not_ready
Number of addresses not ready in endpoint. Tags:endpoint kube_namespace.

Issue Description

Should be: kube_endpoint

avg:kubernetes_state.endpoint.address_not_ready{lbnref:127672} by {kube_namespace,kube_endpoint}

[cecilia saixue watt]

Thank you for raising this! The discrepancy has been resolved.