Added/updated snippets for docs (#2318)

docs/doc_examples/d8a82511cb94f49b4fe4828fee3ba074.asciidoc

@@ -0,0 +1,11 @@
+// This file is autogenerated, DO NOT EDIT
+// Use `node scripts/generate-docs-examples.js` to generate the docs examples
+
+[source, js]
+----
+const response = await client.cat.nodes({
+  v: "true",
+  h: "name,node*,heap*",
+});
+console.log(response);
+----