docs: Add a link to the license badge

Author: Olexandr88

README.md

@@ -1,7 +1,7 @@
 # Offline / Local Search for Docusaurus v2+
 
 ![Version](https://img.shields.io/npm/v/@cmfcmf/docusaurus-search-local?style=flat-square)
-![License](https://img.shields.io/npm/l/@cmfcmf/docusaurus-search-local?style=flat-square)
+[![License](https://img.shields.io/npm/l/@cmfcmf/docusaurus-search-local?style=flat-square)](https://github.com/cmfcmf/docusaurus-search-local/blob/main/LICENSE)
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 ![GitHub issues](https://img.shields.io/github/issues/cmfcmf/docusaurus-search-local?style=flat-square)
 ![GitHub last commit](https://img.shields.io/github/last-commit/cmfcmf/docusaurus-search-local?style=flat-square)