Update README.md

Author: nagstler

README.md

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 # ChatGPT Ruby
 
-[![Gem Version](https://badge.fury.io/rb/chatgpt-ruby.svg)](https://badge.fury.io/rb/chatgpt-ruby)
-[![License](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![Maintainability](https://api.codeclimate.com/v1/badges/08c7e7b58e9fbe7156eb/maintainability)](https://codeclimate.com/github/nagstler/chatgpt-ruby/maintainability)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/08c7e7b58e9fbe7156eb/test_coverage)](https://codeclimate.com/github/nagstler/chatgpt-ruby/test_coverage)
-[![CI](https://github.com/nagstler/chatgpt-ruby/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/nagstler/chatgpt-ruby/actions/workflows/ci.yml)
+<a href="https://badge.fury.io/rb/chatgpt-ruby"><img src="https://img.shields.io/gem/v/chatgpt-ruby?style=for-the-badge" alt="Gem Version"></a>
+<a href="https://opensource.org/licenses/MIT"><img src="https://img.shields.io/badge/License-MIT-yellow?style=for-the-badge" alt="License"></a>
+<a href="https://codeclimate.com/github/nagstler/chatgpt-ruby/maintainability"><img src="https://img.shields.io/codeclimate/maintainability/nagstler/chatgpt-ruby?style=for-the-badge" alt="Maintainability"></a>
+<a href="https://codeclimate.com/github/nagstler/chatgpt-ruby/test_coverage"><img src="https://img.shields.io/codeclimate/coverage/nagstler/chatgpt-ruby?style=for-the-badge" alt="Test Coverage"></a>
+<a href="https://github.com/nagstler/chatgpt-ruby/actions/workflows/ci.yml"><img src="https://img.shields.io/github/actions/workflow/status/nagstler/chatgpt-ruby/ci.yml?branch=main&style=for-the-badge" alt="CI"></a>
+<a href="https://github.com/nagstler/chatgpt-ruby/stargazers"><img src="https://img.shields.io/github/stars/nagstler/chatgpt-ruby?style=for-the-badge" alt="GitHub stars"></a>
 
 🤖💎 A comprehensive Ruby SDK for OpenAI's GPT APIs, providing a robust, feature-rich interface for AI-powered applications.