Update license URL

Author: atouchet

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://github.com/console-rs/console/actions/workflows/ci.yml/badge.svg)](https://github.com/console-rs/console/actions?query=workflow%3ACI)
 [![crates.io](https://img.shields.io/crates/d/console.svg)](https://crates.io/crates/console)
-[![License](https://img.shields.io/github/license/console-rs/console)](https://github.com/console-rs/console/blob/master/LICENSE)
+[![License](https://img.shields.io/github/license/console-rs/console)](https://github.com/console-rs/console/blob/main/LICENSE)
 [![Documentation](https://docs.rs/console/badge.svg)](https://docs.rs/console)
 
 **console** is a library for Rust that provides access to various terminal