docs: update readme

README.md

@@ -14,7 +14,8 @@ This construct is a modified version of this excellent [construct (cdk-iot-core-
 [![Build Status](https://github.com/badmintoncryer/cdk-iot-core-certificates-v3/actions/workflows/build.yml/badge.svg)](https://github.com/badmintoncryer/cdk-iot-core-certificates-v3/actions/workflows/build.yml)
 [![Release Status](https://github.com/badmintoncryer/cdk-iot-core-certificates-v3/actions/workflows/release.yml/badge.svg)](https://github.com/badmintoncryer/cdk-iot-core-certificates-v3/actions/workflows/release.yml)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![npm downloads](https://img.shields.io/npm/dm/cdk-iot-core-certificates-v3.svg?style=flat)](https://www.npmjs.com/package/cdk-iot-core-certificates-v3)
+![Downloads](https://img.shields.io/badge/-DOWNLOADS:-brightgreen?color=gray)
+![npm downloads](https://img.shields.io/npm/dt/cdk-iot-core-certificates-v3?label=npm&color=blueviolet)
 
 ## Installation