Added/updated snippets for docs (#2318)

docs/doc_examples/f8cafb1a08bc9b2dd5239f99d4e93f4c.asciidoc

@@ -0,0 +1,14 @@
+// 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.indices.analyze({
+  tokenizer: {
+    type: "char_group",
+    tokenize_on_chars: ["whitespace", "-", "\n"],
+  },
+  text: "The QUICK brown-fox",
+});
+console.log(response);
+----