Kubernetes SD: Fix namespace meta label
Replace one more instance of `__meta_kubernetes_service_namespace` with
`__meta_kubernetes_namespace`.
@@ -146,7 +146,7 @@ scrape_configs:
target_label: instance
- action: labelmap
regex: __meta_kubernetes_service_label_(.+)
- - source_labels: [__meta_kubernetes_service_namespace]
+ - source_labels: [__meta_kubernetes_namespace]
target_label: kubernetes_namespace
- source_labels: [__meta_kubernetes_service_name]
target_label: kubernetes_name
