Added/updated snippets for docs (#2318)

docs/doc_examples/40d90d9dc6f4942bf92d88bfc5a34672.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.search({
+  query: {
+    match_bool_prefix: {
+      message: {
+        query: "quick brown f",
+        analyzer: "keyword",
+      },
+    },
+  },
+});
+console.log(response);
+----