Update README.md

Author: VolkanSah

README.md

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 # ChatGPT API Integration (in HTML/CSS with JS/PHP)
 ###### Updated: 25.04.2023 (Working well)
 ![Screenshot](chatgpt.png)
+**Full Changelog**: https://github.com/VolkanSah/ChatGPT-API-Integration-in-HTML-CSS-with-JS-PHP/compare/1.0.0...1.0.1
 
 #### Example of GPT-3, 3.5, and 4 integration for your websites using HTML, CSS, JS, and PHP.