Added/updated snippets for docs (#2318)

docs/doc_examples/134384b8c63cfbd8d762fb01757bb3f9.asciidoc

@@ -0,0 +1,24 @@
+// 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.index({
+  index: "logs-debug",
+  document: {
+    date: "2019-12-12",
+    message: "Starting up Elasticsearch",
+    level: "debug",
+  },
+});
+console.log(response);
+
+const response1 = await client.index({
+  index: "logs-debug",
+  document: {
+    date: "2019-12-12",
+    message: "Starting up Elasticsearch",
+  },
+});
+console.log(response1);
+----