Update kubernetes_resources docs with missing examples (#2021)

* Add missing doc info

* Add label_selector example with output block

Author: BBBmau

website/docs/d/resources.html.markdown

@@ -6,18 +6,36 @@ description: |-
   This data source is a generic way to query for a list of resources from the Kubernetes API and filter them. 
 ---
 
-# kubernetes_resource
+# kubernetes_resources
 
 This data source is a generic way to query for a list of Kubernetes resources and filter them using a label or field selector.
 
-### Example: Get a list of namespaces excluding "kube-system"
+### Example: Get a list of namespaces excluding "kube-system" using `field_selector`
 
 ```hcl
-data "kubernetes_resource" "example" {
+data "kubernetes_resources" "example" {
   api_version    = "v1"
   kind           = "Namespace"
   field_selector = "metadata.name!=kube-system"
 }
+
+output "test" {
+  value = length(data.kubernetes_resources.namespaces.objects)
+}
+```
+
+### Example: Get a list of namespaces excluding "kube-system" using `label_selector`
+
+```hcl
+data "kubernetes_resources" "example" {
+  api_version    = "v1"
+  kind           = "Namespace"
+  label_selector = "kubernetes.io/metadata.name!=kube-system"
+}
+
+output "test" {
+  value = length(data.kubernetes_resources.namespaces.objects)
+}
 ```
 
 ## Argument Reference
@@ -29,4 +47,5 @@ The following arguments are supported:
 * `label_selector` - (Optional) A selector to restrict the list of returned objects by their labels.
 * `field_selector` - (Optional) A selector to restrict the list of returned objects by their fields.
 * `namespace` - (Optional) The namespace of the requested resource.
+* `object` - (Optional) The response returned from the API server.