Added/updated snippets for docs (#2318)

docs/doc_examples/35563ef92dddef9d83906d9c43c60d0f.asciidoc

@@ -0,0 +1,21 @@
+// 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.mtermvectors({
+  docs: [
+    {
+      _index: "my-index-000001",
+      _id: "2",
+      term_statistics: true,
+    },
+    {
+      _index: "my-index-000001",
+      _id: "1",
+      fields: ["message"],
+    },
+  ],
+});
+console.log(response);
+----