Added/updated snippets for docs (#2318)

docs/doc_examples/51f6cb682424e110f289af79c106f4c7.asciidoc

@@ -0,0 +1,12 @@
+// 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.cluster.putSettings({
+  persistent: {
+    "cluster.max_shards_per_node.frozen": 3200,
+  },
+});
+console.log(response);
+----