Update cheatsheets

tldr/kubectl-explain

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# kubectl explain
+
+> Display the documentation of a Kubernetes API resource, including available fields and descriptions.
+> More information: <https://kubernetes.io/docs/reference/kubectl/generated/kubectl_explain/>.
+
+- Show documentation for a resource:
+
+`kubectl explain {{pods|nodes|deployments|...}}`
+
+- Show documentation for a sub-resource or field of an object:
+
+`kubectl explain {{pod.spec.containers}}`
+
+- Show documentation for a specific versioned resource:
+
+`kubectl explain {{ingress.v1.networking.k8s.io}}`
+
+- Show all fields recursively for a resource:
+
+`kubectl explain {{po|pods}} --recursive`
+
+- Display help:
+
+`kubectl explain --help`