stdlib: kubernetes: rename #Apply to #Resources

Code convention: use nouns instead of verbs whenever possible.

Reasoning: One can apply just about anything to Kubernetes via this:
deployment, load balancer, RBAC policy, a custom CRD resource, etc.

Upstream those are called resources: You give `kubectl apply` one or more
manifests and it will create the corresponding resources.

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

stdlib/kubernetes/kubernetes.cue

@@ -43,8 +43,8 @@ import (
 	]
 }
 
-// Apply a Kubernetes configuration
-#Apply: {
+// Apply Kubernetes resources
+#Resources: {
 
 	// Kubernetes config to deploy
 	source?: dagger.#Artifact @dagger(input)