Added/updated snippets for docs (#2318)

docs/doc_examples/21e95d29bc37deb5689a654aa323b4ba.asciidoc

@@ -0,0 +1,17 @@
+// 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.security.putRoleMapping({
+  name: "admins",
+  roles: ["monitoring", "user"],
+  rules: {
+    field: {
+      groups: "cn=admins,dc=example,dc=com",
+    },
+  },
+  enabled: true,
+});
+console.log(response);
+----