docs(README): update Kotlin badge to version 2.2.0

Author: itboy87

README.md

@@ -2,7 +2,7 @@
 
 **Ksoup** is a Kotlin Multiplatform library for working with real-world HTML and XML. It's a port of the renowned Java library, **jsoup**, and offers an easy-to-use API for URL fetching, data parsing, extraction, and manipulation using DOM and CSS selectors.
 
-[![Kotlin](https://img.shields.io/badge/Kotlin-2.1.21-blue.svg?style=flat&logo=kotlin)](https://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/Kotlin-2.2.0-blue.svg?style=flat&logo=kotlin)](https://kotlinlang.org)
 [![MIT License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE.md)
 [![Maven Central](https://img.shields.io/maven-central/v/com.fleeksoft.ksoup/ksoup.svg)](https://central.sonatype.com/artifact/com.fleeksoft.ksoup/ksoup)